Is the following a right triangle?


A. Yes, using the slope formula we see that BC is perpendicular to AC.


B. Yes, using the distance formula we see that AC is congruent to BC


C. No, using the slope formula we see that BC is not perpendicular to AC


D. No, using the distance formula we see that AC is not congruent to BC

Is The Following A Right Triangle?A. Yes, Using The Slope Formula We See That BC Is Perpendicular To

Answers

Answer 1

Yes, the triangle is a right triangle, the correct option is A.

Is the triangle a right triangle?

We can see that the vertices of the triangle are at:

A = (6, 4)

B = (-6, 9)

C = (0, 0)

Then the lenghts of each of the sides is:

AC = √( (6 - 0)² + (4 - 0)²) = √52

BC = √( (-6 - 0)² + (9 - 0)²) = √117

AB = √( (6 + 6)² + (4 - 9)²) = 13

If this is a right triangle, then the pythagorean theorem must be true, so:

AB² = AC² + BC²

13² =  √52²  + √117²

169 = 52 + 117

169 = 169

This means that BC is perpendicular to AC.

So yes, it is a right triangle. The correct option is A.

Learn more about right triangles at:

https://brainly.com/question/2217700

#SPJ1


Related Questions

A 64-ounce container of juice costs $5.76. What is the cost per ounce?​

Answers

The cost per ounce of the juice is $0.0.9 using unitary method.

What is unitary method?

The unitary approach is a strategy for problem-solving that involves first determining the value of a single unit, then multiplying that value to determine the required value. The unitary method, in its most basic form, is used to calculate the value of a single unit from a specified multiple. The unitary technique can be used to complete it. Additionally, after determining the value of a single unit, we can increase that value by the number of units needed to determine the value of the additional units. What is division?One of the four fundamental arithmetic processes, or how numbers are combined to create new numbers, is division. The other processes are addition, subtraction, and multiplication. The reverse of multiplying is division.

In this question,

64-ounce container of juice costs $5.76. I

ounce of juice costs = 5.76/64= $0.09

To know more about division:

https://brainly.com/question/21416852

#SPJ1

Which points satisfy both inequalities?

Answers

The pοint that satisfies bοth inequalities is the pοint inside this triangular regiοn.

What is inequality?

An inequality is a mathematical statement that cοmpares twο values οr expressiοns and indicates whether they are equal οr nοt, οr which οne is greater οr smaller.

Since the shading is nοt included, we will need tο use the lines themselves tο determine the cοrrect regiοn οf the cοοrdinate plane.

The first inequality y > (3/2)x - 5 has a slοpe οf 3/2 and a y-intercept οf -5. This means the line will have a pοsitive slοpe and will be lοcated belοw the pοint (0,-5).

The secοnd inequality y < (-1/6)x - 6 has a negative slοpe οf -1/6 and a y-intercept οf -6. This means the line will have a negative slοpe and will be lοcated abοve the pοint (0,-6).

Tο find the pοint that satisfies BOTH inequalities, we need tο lοοk fοr the regiοn οf the cοοrdinate plane that is belοw the line y = (3/2)x - 5 AND abοve the line y = (-1/6)x - 6. This regiοn is the triangular-shaped area that is bοunded by the twο lines and the x-axis.

The pοint that satisfies bοth inequalities is the pοint inside this triangular regiοn.

To know more about inequalities visit:

brainly.com/question/30797813

#SPJ1

Aamena buys a business costing $23000
She pays part of this cost with $12000 of her own money
Calculate what percentage of the $23000 this is
Show your calculations

Answers

Answer:

52.17%

Step-by-step explanation

[tex]\frac{12000}{23000}[/tex] ×100%

[tex]\frac{1200}{23}[/tex]

52.17

when do you reject the null hypothesis? when the value of t is smaller than a preconceived alpha. when the value of z is smaller than a preconceived alpha. when the p-value is larger than a preconceived alpha. when the value of t is larger than a preconceived alpha.

Answers

A null hypothesis refers to a statistical hypothesis that assumes that there is no difference between two groups or variables. The null hypothesis may either be rejected or not rejected based on the statistical results obtained from a hypothesis test. A hypothesis test is a statistical test that is conducted to either accept or reject the null hypothesis based on the statistical results obtained.

When is the null hypothesis rejected?The null hypothesis is rejected when the p-value is less than or equal to a preconceived level of significance, α (usually set at 0.05 or 0.01).The null hypothesis is rejected when the calculated test statistic (such as t-test, z-test, or F-test) is greater than or equal to the critical value corresponding to the level of significance α.

When is the null hypothesis not rejected?The null hypothesis is not rejected when the p-value is greater than the preconceived level of significance, α. This means that there is not enough evidence to reject the null hypothesis.The null hypothesis is not rejected when the calculated test statistic is less than the critical value corresponding to the level of significance α. This means that there is not enough evidence to reject the null hypothesis.

In conclusion, the null hypothesis is rejected when the p-value is less than the preconceived level of significance α or when the calculated test statistic is greater than or equal to the critical value corresponding to the level of significance α. On the other hand, the null hypothesis is not rejected when the p-value is greater than the preconceived level of significance α or when the calculated test statistic is less than the critical value corresponding to the level of significance α.

for such more questions on statistic

https://brainly.com/question/15525560

#SPJ11

A snow making machine priced at $1800 is on sale for 25% off. The sales tax rate is 6. 25%. What is the sale price including tax? If necessary, round your answer to the nearest cent

Answers

The sale price including tax is $ 2390.625.

Given that,

The price of the snow machine= $ 1800

Discount percentage= 25%

Sales tax rate = 6.25%

Hence, Sale price = Price + Discount percentage of price

                              = 1800 + 25/100 × 1800

                              = 1800 + 450

                              = 2250.

Sale price including tax = Sale price + Tax rate

                                       = 2250 + 6.25/100

                                       = 2250 + 140.625

                                       = $ 2390.625.

Hence, the sale price including tax is $ 2390.625.

To learn more about sales tax, refer to:

https://brainly.com/question/30109497

#SPJ4

Compare the processes for finding common denominators for two, three, and four fractions.

Answers

The process of finding a common denominator for two, three, or four fractions is essentially the same, but the number of steps involved increases with the number of fractions.

For two fractions, the common denominator is simply the product of the denominators. For example, to find a common denominator for 1/3 and 1/4, we multiply the denominators to get 3 x 4 = 12. Therefore, the equivalent fractions with a common denominator of 12 are 4/12 and 3/12.

For three fractions, we follow the same process, but we may need to simplify the fractions after finding the common denominator. For example, to find a common denominator for 1/2, 1/3, and 1/4, we multiply the denominators to get 2 x 3 x 4 = 24. Then we convert each fraction to an equivalent fraction with a denominator of 24. 1/2 becomes 12/24, 1/3 becomes 8/24, and 1/4 becomes 6/24. We can simplify these fractions further to get 1/2 = 12/24, 1/3 = 8/24, and 1/4 = 6/24.

For four fractions, we follow the same process as for three fractions, but we need to find the least common multiple (LCM) of the denominators instead of just multiplying them. The LCM is the smallest number that is a multiple of all the denominators. For example, to find a common denominator for 1/2, 1/3, 1/4, and 1/5, we find the LCM of 2, 3, 4, and 5, which is 60. Then we convert each fraction to an equivalent fraction with a denominator of 60. 1/2 becomes 30/60, 1/3 becomes 20/60, 1/4 becomes 15/60, and 1/5 becomes 12/60. We can simplify these fractions further if possible.

what type of population growth will show a population reaching it's carrying capacity

Answers

Answer:

logistic growth

Step-by-step explanation:

In logistic growth, a population's per capita growth rate gets smaller and smaller as population size approaches a maximum imposed by limited resources in the environment, known as the carrying capacity ( K).

Need help to solve this please!!

Answers

Answer:

0.999

Step-by-step explanation:

If the driver wore a seat belt, that is the only column we have to look at.

The chance the driver survived is number survived / number total.

Plugging in, we get 412,042/412,493, or about 0.999.

Hope this helps!

$20 dollars needs to be split between Jack and Jill. Jill gets to make an initial offer. Jack can respond by either accepting Jill’s initial offer or offering a counter offer. Finally, Jill can respond by either accepting Jacks offer or making a final offer. If Jake does not accept Jill’s final offer both Jack and Jill get nothing. Jack discounts the future at 10% i. E. Future earnings are with 10% less than current earnings while Jill discounts the future at 20%. Calculate the best deal of this problem

Answers

The best deal for Jack and Jill would be for Jill to offer Jack $10, and for Jack to accept this offer. This would give Jack $9.09 in the future after discounting, and it would give Jill $10 in the future after discounting.

Jack will accept anything positive.

Jill offers: $20 to herself, $0 to Jack

Jill is indifferent between $20 in one year and $16 today (she discounts the future at 20%).

Jack offers: $16 to Jill and $4 to Himself

Jack is indifferent between $4 in one year and $3.60 today (he discounts the future at 10%). Note that $16.40 is preferred by Jill to $16 in one year.

Jill offers: $16.40 to herself, $3.60 to Jack

Discount refers to the process of reducing the value of future benefits or costs, based on the assumption that people generally prefer immediate benefits to delayed ones. This means that the further into the future a benefit or cost occurs, the less valuable it is considered to be in the present.

Discounting is commonly used in economics, finance, and environmental analysis, where it plays a significant role in determining the present value of future cash flows, investments, and environmental damages. The concept is also used in decision-making, as individuals and organizations often make choices based on their perception of the present value of future outcomes.

To learn more about Discount visit here:

brainly.com/question/28595329

#SPJ4

The third term of a geometric sequence is 32 and the fourth term is -108. Find the common ratio.
-3.375
-1.61
3.375
-1.43

Answers

Answer:

-3.375

Step-by-step explanation:

the point of a geometric sequence is that every new term is created by multiplying the previous term by a constant factor that is the same across the whole sequence.

that factor is called the common ratio.

so, 32 was multiplied by the common ratio, and we get -108 as result.

32 × cr = -108

cr = -108/32 = -27/8 = -3.375 = -3 3/8

What is the measure of ∠Y?

Answers

According to the inscribed angle theorem the measure of angle Y is 43 degrees.

What is inscribed angle theorem?

As the inscribed angle equals half of the central angle, the inscribed angle theorem is also known as the angle at the centre theorem. The centre angle is always the same since the endpoints are fixed, regardless of where it is on the same arc between the ends. The measure of the central angle is equal to double the measure of the inscribed angle occupied by the same arc, according to this theorem. OR. Half of a central angle that subtends the same arc is an inscribed angle. OR. The angle in a circle's centre is twice as large as any angle at its perimeter that the same arc occupies.

We know that, an inscribed angle is half of a central angle that subtends the same arc.

Here the given arc = 86 degrees.

The inscribed angle is half the arc of the circle thus,

angle Y = 1/2(86)

angle Y = 43 degrees.

Hence, according to the inscribed angle theorem the measure of angle Y is 43 degrees.

Learn more about inscribed angle here:

https://brainly.com/question/29028021

#SPJ1

a pizza parlor offers a choice of 16 different toppings. how many 6-topping pizzas are possible? (no double-orders of toppings are allowed) in this situation, does the order of the toppings matter? input yes or no. there are possible 6-topping pizzas.

Answers

By combinations, we get that there are 20,020 possible 6-topping pizzas.

Given that a pizza parlor offers a choice of 16 different toppings, we need to find the number of 6-topping pizzas that are possible. No double-orders of toppings are allowed. What is the number of 6-topping pizzas that are possible?

The formula for combinations is as follows:

ncr = (n!)/(r! * (n - r)!) where n = 16 (total number of toppings available)

r = 6 (number of toppings required for a pizza)

ncr = (16!)/(6! * (16 - 6)!)

⇒ ncr = (16!)/(6! * 10!)

⇒ ncr = (16 * 15 * 14 * 13 * 12 * 11)/(6 * 5 * 4 * 3 * 2 * 1)

⇒ ncr = (16 * 3 * 5 * 7 * 13 * 11)/(3 * 2 * 2)

⇒ ncr = 20,021

In this situation, the order of the toppings does not matter. Therefore, we cannot have a repeat of the same toppings, as mentioned. Hence the answer to the question is no. Thus, there are 20,020 possible 6-topping pizzas.

To learn more about combinations refer :

https://brainly.com/question/29587311

#SPJ11

Cindy's little brother is building a cabin with legos. He finds that he is missing three green legos. He does NOT want to fill in that gap with another color. If he had 42 green legos, write the ratio of green legos to missing legos.

Answers

Answer:

The ratio of green legos to missing legos is:

42 : 3

Simplifying this ratio by dividing both sides by 3, we get:

14 : 1

Therefore, for every one missing green lego, there are 14 green legos.

लगाउनुहोस् । The capacity of a closed cylindrical tank of height 2 m. is 3080 liters. Find the base area of the tank.​

Answers

11.87 m² metal sheet would be needed to make the base area of tank.

Volume of the cylinder

Volume of cylinder, determines how much material it can carry, is determined by the cylinder's volume. A cylinder is a three-dimensional structure having two parallel, identical bases that are congruent.

It is given that capacity of a closed cylindrical vessel of height 2 m is 3080 liters

Let us assume that Radius of cylinder = r

Then Volume of cylinder = π ×r² ×h

= 2π ×r²× m³

1 m³ = 1000 liters

= 2000 π r²  liters

Volume of tank = Capacity

2000 π r² = 3080

=> 2000 × (22/7) × r² = 3080

=> r² = 49/100

=> r = 7/10 m

=> r = 0.7 m

Base Area of tank = TSA = 2πrh + 2πr²

= 2×(22/7)(0.7)×2 + 2×(22/7)×(0.7)²

= 3.0772 +8.792

= 111.87 m²

Hence, 11.87 m² metal sheet would be needed to make it.

To know more about congruent, visit:

https://brainly.com/question/12413243

#SPJ1

Hello! Please help me solve this with workings.
Thanks!!​

Answers

The values of unknown angles in the given figures are:

(a) a° = 117°, b° = 117°, c° = 63°, d° = 78°

(b) e° = 31°, f° = 66°

(c) g° = 69°, h° = 83°

(d) i° = 45°, j° = 60°

What are angles?

Angles are formed when two rays join at a common point. The common point can also be called as a node or vertex, and the two rays are called angle arms. Angles are usually represented by the "∠" symbol. The word angle is derived from the Latin "Angulus". Learn more about lines and angles here.  Angle types are based on angle values ​​in degrees. You can also express angles in radians, or pi (π). 180° is equivalent to pi radians.  

For the given figures:

a° = 117° [ Vertically opposite angles]

b° = 117° [Corresponding angle]

c° = 180° - 117° [Linear pair]

c° = 63°

d° = 78° [Corresponding angle]

e° = 31° [Alternate interior angles]

f° = 66° [Alternate interior angles]

g° = 69° [Corresponding angle]

h° = 83° [Alternate interior angles]

j° = 60° [Alternate interior angles]

i° = 180 - (75 + 60) [Angle sum property of triangle]

To know more about Corresponding angle, visit:

https://brainly.com/question/12521848

#SPJ1

find three positive integers x, y, and z that satisfy the given conditions. the product is 1 and the sum of the squares is a minimum.

Answers

The minimum value of the sum of squares is 3 when all three numbers are equal to 1.

Given the condition that the product of three positive integers x, y, and z is 1 and the sum of the squares is a minimum, we have to find out the three numbers that satisfy this condition.The three numbers that satisfy the condition arex = 1, y = 1, and z = 1 because the product of any number and 1 is the number itself, and the sum of the squares of all the numbers is also 1. Thus, the answer is (1,1,1).It can be proved mathematically that the answer (1, 1, 1) is correct:Product of three positive integers is 1 if and only if all three numbers are equal to 1.If three positive integers a, b, and c have a fixed sum, then the sum of the squares of two of the integers is the minimum when they are equal to each other and their sum is equal to half of the fixed sum.Thus, the sum of the squares of the three numbers is 1 + 1 + 1 = 3, and the minimum value of the sum of squares is 3 when all three numbers are equal to 1.

Learn more about Squares

brainly.com/question/22827180

#SPJ11

solve and graph 4<4(k+3) also check please

Answers

Answer:

-8 < k

Step-by-step explanation:

4 < 4(k+3)

4 < 4k + 12

-8 < k

AMOUNT ALREADY APPROVED R9 000,00 Cash already approved YOUR LOAN OFFER 1. EXPIRY DATE: 28 February 2023 . Payable over 48 months Monthly instalments = R 318,92 R 9 000,00 Calculate the TOTAL amount that Theo has to payback if s the loan. Why, do you think, do banks and other financial institutions cash loans to people that did not apply for it? Theo decides to take the loan and wants to invest the mon. he following options. Option 1: The R9 000 invested at 8% p.a. simple interest f Option 2: The R9 000 invested at 7% p.a. compound interest

Answers

The R9,000 loan offer can be analyzed as follows;

The total amount Theo pays is R15,308.16Banks offer loans as a marketing strategy and based on a customers credit profileOption 1 is the better investment as the total value of the investment after 4 years is higher than the total value of the investment in Option 2.

What is a loan?

A loan is a financial agreement that is made between a lender and a borrower, such that the borrower accepts a certain amount of money provided by the lender, which is to be paid back after a specified period of time, with an interest.

The total amount which has to be paid as repayment for the loan can be obtained by finding the product of the monthly installment and the total number of months to repay the loan:

Total amount Theo pays = R318.92 × 48 = R15308.16

Therefore; The amount Theo will have to pay back for the loan in 48 months is R15,308.16

The reasons banks and other financial institutions offer loans to people that did not apply for loans includes;

Marketing; As a marketing, banks may offer loans to attract new customers. Pre-approved Loans; A banks may offer loans based on the credit history and financial profile of a customer.

Theo's investment options can be analyzed as follows;

Option 1: Investment with simple interest calculation

Interest earned = R9,000 × 8% × 4 years = R2,880

The total value of the investment after 4 years = R9,000 + R2,880 = R11,880

Option 2: Investment with compound interest calculation

The total value of the investment after 4 years = R9,000 × (1 + 7%)⁴ = R11,797.16409

Based on the calculation, Option 1 is the better option as the value after 4 years is better

Learn more on compound interest here: https://brainly.com/question/17578515

#SPJ1

For Blake's lemonade recipe, 12 lemons are required to make 16 cups of lemonade. Fill out a table of equivalent ratios and plot the points on the coordinate axes provided.

Answers

Answer: To fill out a table of equivalent ratios for Blake's lemonade recipe, we can use the ratio of lemons to cups of lemonade:

Lemons             Cups of Lemonade

3                        4

6                        8

9                        12

12                      16

15                      20

18                      24

To plot the points on a coordinate axes, we can use the Lemons as the x-coordinate and the Cups of Lemonade as the y-coordinate. The points would lie on a line that passes through the origin (0,0) and the point (12,16).

         |       *

 Cups of |    *     *

Lemonade  | *           *

         |________________

            Lemons

              0    12

The line represents the proportional relationship between the number of lemons and the amount of lemonade produced. As the number of lemons increases, the amount of lemonade produced increases proportionally.

Step-by-step explanation:

The Anderson’s travelled for 880 km from St. John’s to Halifax via Argentia. Part of the trip was by car at 80 km/h, and the rest by ferry at 16 km/h. If the total travelling time for the entire trip was 27 h, how many hours were spent by car, and how many by ferry? (Answer: car = 7 h; ferry = 20 h)

Answers

The car travelled at 80km/h for 7 hours and travelled a distance of 560km whereas the ferry travelled at 16km/h for 20 hours and travelled a distance of 320km.

We know that the Anderson’s travelled for 880 km from St. Johns to Halifax via Argentia and that part of the trip was by car at 80 km/h and the rest by ferry at 16 km/h.

we need to find how much time did it take the Anderson’s to travel by car and by ferry

as part of the journey was done by car and the other by ferry

560km was travelled by car therefore now we need to find time travelled by car = distance = speed x time

we get time travelled by car = 7 hours

similarly we need to find the time take by ferry we have:

320km travelled by ferry at 16km/h we get the time travelled by ferry = 20hours

To learn more about distance, click here:

brainly.com/question/15172156

#SPJ4

please help ill give brainliest to the first correct answer.
i really dont understand this question

Answers

The required time is mathematically given as

t-150 minutes.

This is further explained below.

What is the time?

We know that the volume of the prism is given by.

[tex]\text{Volume}=\text{(Base Area)}\times\text{height}[/tex]

[tex]\text{Base Area}=\dfrac{1}{2}\times(1.4+0.6)\times2[/tex]

[tex]\text{Base Area}=2\ \text{m}^2[/tex]

Now,

[tex]\text{Volume}=2\times1=2\ \text{m}^3[/tex]

Given that there is a twenty percent drop in the level of the pond during the first thirty minutes.

Because of this, the volume increases.

[tex]\text{Volume}=2\times0.8=1.6\ \text{m}^3[/tex]

Now, the rate of emptying the tank is,

[tex]=\dfrac{2-1.6}{30} =\dfrac{1}{75} \ \text{m}^3/ \text{min}[/tex]

In conclusion, We also know that,

$$

[tex]\text{time}=\dfrac{\text{volume}}{\text{rate}}[/tex]

[tex]\text{time}=\dfrac{2}{\frac{1}{75} } =150 \ \text{min}[/tex]

Therefore, Colin must wait for the pond to drain for a total of 150 minutes.

Read more about the time

https://brainly.com/question/28050940

Sarun is thrice as old as his sister Anita. If five years is subtracted from Anita’s age and seven years added to Sarun’s age , then
Sarun will be five times Anita’s age. How old were they three years ago?

Answers

Answer:

Anita is 11 years old and sarun 55 years old( not so sure about this answer... what do you think)

Step-by-step explanation:

let Anita's age be x

and sarun's age be 3x

if, x-5 = 3x+7

3x+7 = 5(x-5)

3x+7=5x-25

32=2x

x=16

their ages 3 years ago,

Anita= 16-5=11yrs

sarun= 3*16+7 = 55yrs

Sadio starts with savings of £15
Thomas starts with no savings.
Each week from now,
Sadio will save £3.50 and Thomas will save £3
In how many weeks will Sadio and Thomas have savings in the ratio 2 : 1?

Answers

Thomas and Sadio have a 15:8 savings ratio that will be ready in five weeks.

What is the ratio?

In mathematics, a ratio shows how frequently one number appears in another.

For instance, the proportion of oranges to lemons in a fruit plate would be eight to six if there were eight oranges and six lemons.

Oranges make up 8:14 of the total fruit, whereas lemons make up 6:8 of the total fruit.

So, the number of weeks would be:

Considering that Sadio savings = 15 + 4.50 times

Thomas = x4

Where the number of weeks is x.

Sadio : Thomas  =  15 : 8

15 + 4.50x : 4x =  15 : 8

(15+ 4.50x ) / 4x =  15 / 8

Now, perform cross multiplication as follows:

8 (15+ 4.50x) = 15 (4x)

120 + 36x = 60x

60x - 36x = 120

24x = 120

x = 120 / 24 = 5 weeks

Therefore, Thomas and Sadio have a 15:8 savings ratio that will be ready in five weeks.

Know more about ratios here:

https://brainly.com/question/12024093

#SPJ1

Correct question:

Sadio starts with savings of £15. Thomas starts with no savings. Each week from now, Sadio will save £4.50 and Thomas will save £4. In how many weeks will Sadio and Thomas have savings in the ratio 15:8 ?

Pls answer my question it will be amazing if you do just pls.

Answers

The equation to show the relationship between x and y is y = 0.08x, where y is the amount of sales tax in dollars for the item and x is the cost of the item in dollars before tax.

What is tax?

Tax is a compulsory financial charge or some other type of levy imposed upon a taxpayer by a governmental organization in order to fund various public expenditures. A failure to pay, along with evasion of or resistance to taxation, is punishable by law. Taxes consist of direct or indirect taxes and may be paid in money or as its labour equivalent. Most countries have a tax system in place to pay for public, common or agreed national needs and government functions. Some levy a flat percentage rate of taxation on personal annual income, but most scale taxes based on annual income amounts.

This equation reflects the fact that the amount of sales tax for an item is 8% of its cost before tax.

To learn more about tax

https://brainly.com/question/28735352

#SPJ1

Sales tax: The equation to show the relationship between x and y is x + y = C,

What is equation?

An equation is a mathematical statement that expresses two mathematical expressions to be equal. It usually consists of two numbers, variables, or a combination of the two. An equation may be used to calculate a desired result, or to determine the relationship between two variables. Equations can also be used to test whether a statement is true or false. Most equations are written in the form of "a = b," where a and b are two numbers or variables.

where C is the cost of the item plus the sales tax. This equation can be explained mathematically as follows: the cost of the item (x) is added to the amount of sales tax (y) to give the total cost of the item with tax (C).

To learn more about equation
https://brainly.com/question/17145398
#SPJ1

I need the steps to how I got the answer for this question but I don’t know the answer! please help!

Thank you!!

Answers

Answer:

Proofs attached to answer

Step-by-step explanation:

Proofs attached to answer

A manufacturer of compact fluorescent light bulbs advertises that the distribution of the lifespans of these light bulbs is nearly normal with a mean of 9,000 hours and a standard deviation of 1,000 hours.
(a) What is the probability that a randomly chosen light bulb lasts more than 10,500 hours?
(b) Describe the distribution of the mean lifespan of 15 light bulbs.
(c) What is the probability that the mean lifespan of 15 randomly chosen light bulbs is more than 10,500 hours?
(d) Sketch the two distributions (population and sampling) on the same scale.
(e) Could you estimate the probabilities from parts (a) and (c) if the lifespans of light bulbs had a skewed distribution?

Answers

A manufacturer of compact fluorescent light bulbs advertises have a standard deviation of 1,000 hours so the values are:

A normal distribution with,

μ = 9000

σ = 1000

a) The standardized score is the value x decreased by the mean and then divided by the standard deviation.

x = 105000 - 9000 / 1000 ≈ 1.50

Determine the corresponding probability using the normal probability table in appendix,

P(X>10500) = P(Z>1.50) = 1 - P(Z<1.50)

= 1 - 0.9332 = 0.0668.

b) n = 15

The sampling distribution of the mean weight is approximately normal, because the population distribution is approximately normal.

The sampling distribution of the sample mean has mean μ and standard deviation σ/√n

μ = 1000/√15 = 258.19

c) The sampling distribution of the sample mean has mean μ and standard deviation σ/√n

The z-value is the sample mean decreased by the population mean, divided by the standard deviation:

z = x-u/σ/√n = 10500-9000/1000√15 = 5.81

Learn more about Probability:

https://brainly.com/question/26203207

#SPJ4

Nine percent of men are color blind. Researchers need at least 60 men with this trait, so they randomly select 700 men. Estimate the probability that at least 60 color-blind men are in the sample. Use a TI-83, TI-83 plus, or TI-84 calculator to find the probability. Round your answer to four decimal places. Provide your answer below:

Answers

The estimated probability is 0.9537 (rounded to four decimal places).Hence, the answer is 0.9537.

Question: Nine percent of men are color blind. Researchers need at least 60 men with this trait, so they randomly select 700 men. Estimate the probability that at least 60 color-blind men are in the sample. Use a TI-83, TI-83 plus, or TI-84 calculator to find the probability. Round your answer to four decimal places. Provide your answer below:

Solution:

Let the probability of the man having the trait of color blindness be p. Then, p = 0.09, and the sample size is n = 700.Mean and Variance of Binomial Distribution are:μ = np and σ² = np(1 − p)Here, p = 0.09, n = 700μ = np = 700(0.09) = 63Andσ² = np(1-p) = 700(0.09)(0.91) = 5.679Now we need to find the probability that at least 60 color-blind men are in the sample.i.e., P(X≥60)By using the Central Limit Theorem, we can approximate this binomial distribution as a normal distribution with mean μ = 63 and variance σ² = 5.679.P(X≥60) can be calculated using the following formula:P(Z≥((60-63)/√(5.679))) = P(Z≥(-1.684))Now we need to look at the z-table or use the calculator to find the value of P(Z≥(-1.684))P(Z≥(-1.684)) = 0.9537 (rounded to four decimal places)Therefore, the estimated probability is 0.9537 (rounded to four decimal places).Hence, the answer is 0.9537.

Learn more about Probability

brainly.com/question/23017717

#SPJ11

Leo has a number of toy soldiers between 27 and 54. If he wants to group them four by four, there are none left, seven by seven, 6 remain, five by five, 3 remain. How many toy soldiers are there?

The answer is 48 but I need step by step explanation

please help it’s due today(midnight right now), I will mark brainliest

Answers

The answer is 45 toy soldiers which can be solved by applying the fundamentals of algebra.

What is algebra?

Algebra is a branch of mathematics which uses symbols to represent numbers and variables in equations and formulas to solve problems. Algebra is used to understand the relationships between different values, to find unknown values, and to solve equations.

To represent the two scenarios provided in the question, we must first build up two equations.

If Leo arranges the toy troops in the first scenario four by four, then the equation is 4x = 27, where x is the total number of toy soldiers.

If Leo arranges the toy troops seven times out of seven in the second scenario, the equation is 7x = 54, where x is the total number of toy soldiers.

The equations must then be solved in order to determine the value of x in each equation.

We multiply both sides of the equation by 4 to get x = 6.75 for the first equation.

To get x = 7.71428 we multiply both sides of the second equation by 7.

We settle on 6, the lowest whole number between 6.75 and 7.7142, because there must be an even number of toy soldiers. In the first situation, Leo has a total of 24 toy soldiers, while in the second, he has 42, or 4 x 6 and 7 x 6, respectively.

Since the question specifies that there should be between 27 and 54 toy soldiers, we choose the higher value of 42 to arrive at the correct response, which is 45 toy soldiers.

For more questions related to whole number

https://brainly.com/question/29768132

#SPJ1

Prove the triangles are congruent. Include all steps of proof.

Answers

As a result of demonstrating that two pairs of corresponding sides and their included angles are congruent in both triangles

What precisely is a triangle?

A triangle is a closed, double-symmetrical object composed of three line segments known as sides that intersect at three points known as vertices. Triangles are distinguished by their sides and angles. Triangles can be equilateral (all factions equal), isosceles, or scalene based on their sides. Triangles are classified as acute (all angles are less than 90 degrees), okay (one angle is equal to 90 degrees), or orbicular (all angles are greater than 90 degrees) (all angles greater than 90 degrees). The region of a triangle can be calculated using the formula A = (1/2)bh, where an is the neighbourhood, b is the triangle's base, and h is the triangle's height.

Triangle ABC with AB, BC, and AC sides.

Triangle DEF with DE, EF, and DF sides.

Angle ABC and angle DEF are vertical angles, which means they are congruent, as shown in the diagram. As a result, angle ABC = angle DEF.

We can see from the diagram that BC and EF are both vertical, so they must be congruent because they are opposite sides of a parallelogram. As a result, BC = EF.

Because they are opposite sides of a parallelogram, they must be congruent. As a result, AC = DF.

As a result of demonstrating that two pairs of corresponding sides and their included angles are congruent in both triangles, we can conclude that Triangle ABC and Triangle DEF are congruent using the Side-Angle-Side (SAS) criterion.

To know more about triangle visit:

https://brainly.com/question/2773823

#SPJ1

if you flipped a fair coin 40 times, what is the heoretical proportion of heads? in other words, what percent do you expect to come up heads> based on your confidence interval, do yuou think thje copi used was fair? wy or why not

Answers

A fair coin is flipped 40 times. The probability of getting a head when the coin is tossed is 0.5. If the same coin is flipped 40 times, the probability will remain 0.5. That is, there are equal chances of getting heads and tails when a fair coin is flipped.

Based on the confidence interval, if the actual proportion of heads falls within the range of the confidence interval, it can be said that the coin used was fair. If the actual proportion is outside the confidence interval, it may be an indication that the coin was not fair.

The level of confidence is typically 95% or 99%. If a confidence interval is constructed for the proportion of heads based on a sample of 40 flips and the interval includes the expected proportion of 50%, it can be said that the coin used was fair. If the interval does not include 50%, there is evidence that the coin may not be fair.

For more information regarding the topic, probability check the below link

https://brainly.com/question/13604758

#SPJ11

Other Questions
It is important to build credibility by citing sources. Business writers follow a narrative pattern in business documents. Which of the following examples is the best way to build your credibility in a business document? a) Only 57 percent of American adults have basic financial literacy skills, putting it in 4th place among nations with advanced economies. b) Standard and Poor's 2014 study on global financial literacy found that only 57 percent of American adults had basic financial skills, putting the U.S. 4th among nations with advanced economies. c) A study on the financial literacy among American adults show that the U.S. ranks 4th among 144 nations. What is Islam? What are the major beliefs and practices of Islam? what is the value of x Urgent please help!!! In this assignment, you will use what you have learned to create a Venn diagram to compare and contrast the Wii gaming system with two other consoles that were on the market at the same time. Each category in the triple Venn diagram should have at least three descriptions listed.After creating the diagram, write a two-paragraph conclusion discussing which of the three systems you think is the best, and why. You can create the three circle Venn diagram and conclusion in a presentation software such as Prezi or PowerPoint. PLEASE HELP!! Pythagorean Theorem (triangles) EXPLANATORY: Analyze how the author uses evidence, details, examples, and technical language to communicate a thesis or central idea about changes in emotional theory. Discuss how the author develops this central idea over the course of the texts, including how it is shaped and refined by specific details. AsH3, HBr, KH, H2Se arrange in increasing order of acid strength 1. Use the bond enthalpies to calculate the enthalpy change for this reaction. Is the reaction exothermic or endothermic?C2H6O + 3 O2 = 2 CO2 + 3 H2O could and equal increase in government spending and in taxes be used to reach full employment gdp if so which amount investment x offers to pay you $4,900 per year for 9 years, whereas investment y offers to pay you $6,500 per year for 5 years. a. if the discount rate is 5 percent, what is the present value of these cash flows? (do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) b. if the discount rate is 23 percent, what is the present value of these cash flows? (do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.) coenzymes are nonprotein compounds that are required for the activity of certain enzymes. one critical coenzyme central to metabolism is nad . in fact it is one of 5 coenzymes required by______ , the critical enzyme for producing acetyl-coa. nad is synthesized from_____ as was discovered to be critical for health by two american scientists, ______ , in the early 20th century. dietary lack of this critical molecule produces pellagra, characterized by the following symptoms: _____ . people with these problems were found in parts of the u.s. where diets lacked vegetables and consisted principally of corn. interestingly, soaking the corn in ____, a common practice in mexico, releases the critical coenzyme from proteins, making it bioavailable, find the hypotenuse: c = an economy recently reported nominal gdp of 3 trillion euro and a gdp deflator of 200. what was real gdp? using a stress perspective, consider the different suggestions harriet and charlie provide hank towards the end of the case (beefing up security vs. keeping salaries public). which of the following is most accurate for how harriet and charlie are dealing with the stressful event of the salaries being released? question 1 options: A. harriet is suggesting an emotion-focused cognitive approach to deal with the stressor B. charlie is suggesting an emotion-focused behavioral approach to deal with the stressor C. harriet is suggesting a problem-focused behavioral approach to deal with the stressor D. all of the above Read the following scenario and then label the stimuli and responses. Benny decides to teach his fish to swim to the top of the fish bowl. Currently, his fish swim to the top of the bowl only after he feeds them. Benny uses a flashlight to shine light in the bowl before sprinkling in the fish food. After a week, when Benny shines a light in the bowl, the fish swim to the top of the tank whether or not he has sprinkled in food. Unconditioned Stimulus fish food d unconditioned Response light from the flashlight Neutral Stimulus -Conditioned Stimulus swim to the top of the tank Conditioned Response Seventy five percent of a compound is carbon. If you have 250 grams of this particular compound, how much carbon is contained? The answer and steps The average mass of six people is 58kg. The lightest person has a body mass of 43kg. What is the average mass of the other 5 people. public interface Player{ /* Return an integer that represents a move in a game /int getMove();/ Display this status of the game for this Player after next move /void updateDisplay();}A programmer plans to write programs that stimulate various games. In each case he will have several classes, each representing a different kind of competitor in the game, such as ExpertPlayer, ComputerPlayer, RecklessPlayer, CheatingPlayer, Beginner, IntermediatePlayer, and so on. It may or may not be suitable for these classes to implement the Player interface, depending on the particular game being stimulated. In the games described below, which is the least suitable for having the competitor classes implement the given Player interface?A. High-Low Guessing Game: The computer thinks of a number and the competitor who guesses it with the least number of guesses wins. After each guess, the computer tells whether the number is higher or lower than the guess.B. Chips: Start with a pile of chips. Each player in turn removes some number of chips. The winner is the one who removes the final chip. The first player may remove any number of chips, but not all of them. Each subsequent player must remove at least one chip and at most twice the number removed by the preceding player.C. Chess: Played on a square board of 64 squares of alternating colors. There are just two players, called White and Black, the colors of their respective pieces. The players each have a set of pieces on the board that can move according to any set of rules. The players alternate moves, where a move consists of moving any one piece to another square. If that square is occupied by an opponent's piece, the piece is captured then removed from the board.D. Tic-Tac-Toe: Two players alternate placing 'x' and 'o' on a 3X3 grid. The first player to get three in a row, where a row can be vertical, horizontal, or diagonal.E. Battleships: There are two players, each with a 10X10 grid hidden from his opponent. Various "ships" are placed on the grid. A move consists of calling out a grid location, trying to "hit" an opponent's ship. Players alternate moves. The first to sink his opponent's fleet wins. Arrange the equations in the correct sequence to find the inverse of f(2)=y==33z-zy=y-433z +4=y(1+z)33z-zy=y+433x+4=y+zy1+zy=f (2) = 33274+433z-zy = y +4A =33-y=f- (z) = 332+4z (33-y)=y-4