Mathematics College

It’s for pre college

Answers

Answer 1

Answer:

Step-by-step explanation:

y = mx + b for line through (7, 4) and perpendicular to -5x + 9y = - 71

perpendicular lines have negative reciprocal slopes

-5x + 9y = - 71

9y = 5x - 71

y = (5/9)x - 71/9

so a perpendicular line will have slope -9/5

y = (-9/5)x + b

plug in our desired point

4 = (-9/5)7 + b

4 = -63/5 + b

20/5 = -63/5 + b

b = 83/5

y = (-9/5)x + 83/5

5y = -9x + 83

Related Questions

Does anyone know this?

Answers

Answer:

I think 7.6 i remember i had something like this

Step-by-step explanation:

1/7 divided by blank equals 14

Answers

Answer:

1/98

Step-by-step explanation:

Step 1: Translate statement into equation.

[tex]\frac{1}{7}/x = 14[/tex] [tex]\frac{1}{7x}=14[/tex]

Step 2: Multiply both sides by 7x.

[tex]\frac{1}{7x} * 7x = 14 * 7x[/tex] [tex]1 = 98x[/tex]

Step 3: Divide both sides by 98.

[tex]\frac{1}{98} =\frac{98x}{98}[/tex] [tex]x = \frac{1}{98}[/tex]

Step 4: Check if solution is correct.

[tex]\frac{1}{7}/\frac{1}{98}[/tex] [tex]\frac{1}{7}*98[/tex] [tex]14[/tex]

Therefore, the answer is 1/98.

I don't know the answer to this & I don't understand how to get it.

Answers

Answer:

i thank it h

Step-by-step explanation:

Answer:

Well your answer is (F)

Step-by-step explanation:

15. Jessica is trying to hire a babysitter that charges less than $10 per hour (not including any extra fees).
Which babysitters would charge less than $10 per hour? Select all that apply.
A. Mia charges $34 for 3 hours. This includes a $10 commute fee.
B. Alex charges $66 for 6 hours. This includes a $12 commute fee.
C. Sam charges $92 for 7 hours. This includes a $8 commute fee.
D. Tony charges $52.5 for 3.5 hours. This includes a $0 commute fee.
E. Rene charges $112 for 5.5 hours. This includes a $2 commute fee.

Answers

Answer:

A. and B.

Step-by-step explanation:

A. $34 - $10= $24 hourly fee divided by 3= $8 per hour.

B. $66 - $12= $54 hourly fee divided by 6= $9 per hour.

C.$92-$8= $84 hourly fee divided by 7= $12 per hour.

D. $52.5-$0= $52.5 hourly fee divided by 3.5= $15 per hour.

E. $112-$2=$110 hourly fee divided by 5.5= $20 per hour.

So Mia and Alex are the cheapest .

Answer the following questions.
(a) What percent of 80 is 44?
(b) What number is 45% of 40?

Answers

Answer:

a. 55%

b. 22

Step-by-step explanation:

Answer:

[tex]a)55[/tex]

b) 18

Step-by-step explanation:

→ Set up an for part a

[tex]\frac{80x}{100} =44[/tex]

→ Multiply both sides by 100

[tex]80x=4400[/tex]

→ Divide both sides by 80

[tex]x = 55[/tex]

→ Multiply both numbers together for part b

45 × 40 = 1800

→ Divide the answer by 100

1800 ÷ 100 = 18

I RELLY NEED HELP RIGHT NOW

Answers

Answer: 28

Step-by-step explanation:

Ty'Sean went to the bowling alley and spent $14.50. If his rental shoes costs $4.50 and he played 5 games, what was the price per game?

Answers

Answer:

first off theres two ways of doing it the equation is more fun though

14.5 = x + 4.5

14.5 = x(5) -4.5

-4.5

10 = 5x

divide by 5

you get

2x or $2

other way was to just -4.5 and divide by 5 but thats no fun

License plates in the great state of Utah consist of 2 letters and 4 digits. Both digits and letters can repeat and the order in which the digits and letters matter. Thus, AA1111 and A1A111 are different plates. How many possible plates are there?

Answers

Answer:

Step-by-step explanation:

The correct option is 3. Step-by-step explanation: It is given that License plates in the great state of Utah consist of 2 letters

henry is designing a tablecloth for his dining room table. He wants to buy fabric in his favorite color to make the tablecloth. use the dimensions below to determine how much fabric he need to buy. 12 feet 7 feet

Answers

This question is basically asking for the area of the tablecloth. Remember that A = l • w.

12 • 7 = 84

So, Henry will need to buy 84 ft^2 of fabric.

A furniture company charges 0.45 per pound
for shipping

Write an equation for the cost(y) of shipping
x pounds.

Use it to determine the cost of shipping a
12-pound chair.

Answers

The cost of the shipping a 12 pound chair is 5.4 all you need to do is 0.45 x 12 =5.4

0.45=Y 5.3=X

If 1,600 divided by n = 4, what is the value of n?
A 40
B 400
C4,000
D40,000

Answers

Answer:

B) 400

Step-by-step explanation:

To find the value of n, you would have to divide 1600 by 4. 1600/4=400.

Answer:

400

Step-by-step explanation:

1600 4

Find the surface area of this cuboid

Answers

Answer:

Step-by-step explanation:

SA=2(5x2)+2(5x3)+2(3x2)

SA=20+30+12

SA=62

An object is launched directly in the air at a speed of 8 feet per second from a platform located 4 feet above the ground. The position of the object can be modeled using the function f(t)=−16t2+8t+4, where t is the time in seconds and f(t) is the height, in feet, of the object. What is the maximum height, in feet, that the object will reach?

Answers

The maximum height is 68 ft. The easiest way to find this answer is by using the online desmos graphing calculator. It is a lifesaver

What is 23=5-2/3m ??????

Answers

Answer:

Step-by-step explanation:

if it's

23 = 5 - (2/3)m

18 = (-2/3)m

m = 18(-3/2)

m = -27

if it's

23 = 5 - 2/(3m)

18 = -2/(3m)

18(3m) = -2

54m = - 2

m = -2/54

m = - 1/27

which expression is equivalent to 15c + 20?

Answers

Answer: (3c+4)

Step-by-step explanation:

How do u do this math problem

Answers

Answer:

is there a question asked or no?

what is the greatest number of obtuse angles that a right triangle can contain

Answers

Step-by-step explanation:

i think this is the answer

Answer:

Zero

Step-by-step explanation:

Obtuse angle is the angle greater than 90°.

A right triangle has one 90° and the sum of remaining angles is 90°.

It means a right triangle can't have an obtuse angle.

my friend asked me for help and i forgot how to do this.

Answers

Answer:

Wings-3

Dollars-10

try this

Please help! Thanks!: If a 95% confidence interval was being calculated using the following expression:

3.2 ± 1.96 ⋅ 1.1

What would be the margin of error for this confidence interval?
If you can please give an explanation on how to solve?

Answers

The confidence interval can be calculated from the margin of error, and vice versa,

The margin of error of the confidence interval is 2.156

The confidence interval is given as:

[tex]\mathbf{CI = 3.2 \pm 1.96 \cdot 1.1}[/tex]

The formula of confidence interval is:

[tex]\mathbf{CI = \bar x\pm E}[/tex]

Where E represents the margin of error.

So, by comparison:

[tex]\mathbf{E = 1.96 \cdot 1.1}[/tex]

Multiply

[tex]\mathbf{E = 2.156}[/tex]

Hence, the margin of error of the confidence interval is 2.156

Read more about margin of errors at:

https://brainly.com/question/13990500

Tara's pool is 50 yards in length and 20 feet in width. How many square feet is the pool? How many square yards in the pool? Show your work.

Answers

1 yard = 3 feet 3 x 50 = 150 ft. L x W = Area

150’x 20’ = 3,000 sq. ft. 3,000 sq ft. divided by 3 = 1,000 sq. yd.

The product of a number is 221. sum of no. is 30. Find the number. . p

Answers

Answer: 13 and 17

Would appreciate brainly <3

Whitney and Destiny hung out at the mall on Saturday. They spent 45 minutes shopping for clothes and 1 hour at the food court. Then they spent 30 minutes at the video arcade before heading home. It was 12:45 P.M. when Whitney and Destiny left the mall. What time did they start shopping for clothes?

Answers

Answer:

11.15 i think

Step-by-step explanation:

I
Graph the direct variation equation. Y=1/3x
Which graph is correct

Answers

It’s A , or the first graph

A previous survey of Washington residents showed that 18% of residents accessed a state park within the last 12 months. This year, the state would like to re-administer the survey, but wants to be sure the Margin of Error in their new study will be at most 4%. Assuming they believe the previous survey's results were reliable, how many samples should they take to ensure their Margin of Error is at most 4% if they plan to analyze the data using a 95% confidence interval

Answers

Using the z-distribution for the margin of error, it is found that 355 samples should be taken.

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which z is the z-score that has a p-value of [tex]\frac{1+\alpha}{2}[/tex].

The margin of error is given by:

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

The estimate is of 18%, hence [tex]\pi = 0.18[/tex].

95% confidence, hence [tex]\alpha = 0.95[/tex], z is the value of Z that has a p-value of [tex]\frac{1+0.95}{2} = 0.975[/tex], so [tex]z = 1.96[/tex].

The minimum sample size is n for which M = 0.04, hence:

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

[tex]0.04 = 1.96\sqrt{\frac{0.18(0.82)}{n}}[/tex]

[tex]0.04\sqrt{n} = 1.96\sqrt{0.18(0.82)}[/tex]

[tex]\sqrt{n} = \frac{1.96\sqrt{0.18(0.82)}}{0.04}[/tex]

[tex](\sqrt{n})^2 = \left(\frac{1.96\sqrt{0.18(0.82)}}{0.04}\right)^2[/tex]

[tex]n = 354.4[/tex]

Rounding up, 355 samples should be taken.

A similar problem is given at https://brainly.com/question/14936818

How much would $125 invested at 8% interest compounded continuously be
worth after 16 years? Round your answer to the nearest cent.
A(t)= Poet

A. $428.24
B. $285.00
C. $449.58
D. $367.26

Answers

c$449.58

hfufhfthcuxjyfus4hxtstcyztf

Among all the pairs of numbers whose difference is 18 18 , find the pair with the smallest product. What is the product?

Answers

Answer:2-b= 18-a+b now their product is F=a.b-f(b)=18+b)b Dt/db =18+2b-0=18+2b-0=9+b-9=b

so, that's our only critical point, run a first-derivative test on it, and you'll notice is a minimum

Step-by-step explanation:

NO LINKS!!

y = |x + 4| - 1

Approximate when the function is positive, negative, increasing or decreasing.

Describe the end behavior of the function.

Function is positive:

Negative:

Increasing:

Decreasing:

Answers

Step-by-step explanation:

Given function:

y = |x + 4| - 1

See the graph below

According to the graph we see that

The minimum is (-4, -1) and zero's are (-5, 0) and (-3, 0)

Function is positive:

When x < - 5 and x > -3

Negative:

When x is between -5 and -3

Increasing:

When x > -4

Decreasing:

When x < -4

Plz help I need help

Answers

Answer:

a is 4 because 4 x 16=20 i hope this help

Answer :

a + 16 = 20

a = ?

a = 20 + 16

a = 36

a = 36 ✔️

Are the following polynomial sets open or closed? 6. (x ^ 2 + x - 4) - (x ^ 2 + x + 8) 7 (2 - x)(1 + 3x) 8. (5b - 3c)(7b - 3c)

Answers

Answer:

=5880b2x4−6048bcx4+1512c2x4−3920b2x3+4032bcx3−1008c2x3+33320b2x2−34272bcx2+8568c2x2−82320b2x+84672bcx−21168c2x−31360b2+32256bc−8064c2+6x2+6x−24

Step-by-step explanation:

Factor the following expression. x^2+9x+8

Answers

Answer:

(x+1)(x+8)

Step-by-step explanation:

I just got multiples of 8 that when added equal to 9. In this case, it was 1 and 8 which when you multiply is 8 and when you add, it's 9.

Other Questions

Ali has q quarters. Tom has four more quarters than Ali. Drag and drop the expressions into the boxes to write an expression that represents the number of quarters Ali and Tom have together. Response area + Response area Estimate 22,752 divdided by 18 , I'm doing a lot tonight, have 10 assesments due tom ____________means without air. Basically, your lungs cannot provide energy very fast, so anaerobic exercises use the energy stored in the muscles. Question 1 options: Anaerobic Aerobic Of the sheep discussed in the presentation, which of the following has the heaviest and largest horns?O Desert BighornsO AoudadO Rocky Mountain BighornO Pronghorn The vertices of a feasible region are (14, 2), (0, 9), (6, 8), and (10, 3). What is the maximum value of the objective function P if P = 180x 250y?. sale 90%Luca buys a swing set during the sale. If the original price was $270, how much does Luca pay? Which of the following would likely be included in a Deaf home but not DeafSpace?Decorations in muted colorsGlass walls with open floorsU-shaped seatingRamps instead of stairs i need some help here plzzzzzzzzzzNO LINKS!!!!!! Write an example of how a density-dependent factor can increase a population of birds. How does the use of the word ""twitches"" in the stage direction most affect this scene? It characterizes Hale as someone who is weak and cannot handle difficult aspects of the job. It emphasizes the fact that death is a difficult subject for Mr. Hale and causes him discomfort. It hints to the reader that Hale may have somehow been involved and is acting out of guilt. It reveals to the reader that Hale is extremely upset because he and Mr. Wright were very close. If the submarine intends to submerge to a depth of 150 m, what pressure must it be designed to withstand Pls help, will give brainleist Calculate how many guesses in binary search algorithm. Which of thefollowing is anO-UE stem-changingverb?A. VestirseB. DormirC. Perder One x-intercept for a parabola is at the point (-0.4,0). Use the quadratic formula to find the other x-intercept for the parabola defined by this equation: y = 5x2 + 7x + 2 Separate the values with a comma. Round, if necessary, to the nearest hundredth. What is the equation of the line in slop-intercept form?Enter your answer in the blank spotsy= __x + __ how did Micheal afton die how did u figure this out Is stress always a bad thing? How can stress help us? what might occur when there is a mutation in the gene that codes for the n-protein?