Can someone help me with this please?

Answer:

let cp = x

now ,

sp= x-5%ofx

212= 4x/5

x=265$

Answer: Cost price 265$

Step-by-step explanation: Loss% = 20.

                                             Money Earned After loss =212$.

        cost price - loss = 265 - 20% = 212.

Answer: Yes

Step-by-step explanation:

Given that :

Probability of success (p) = 0.8

Number of simulations (n) = 20

Number of tracks on which infrared system detects object = x

To test if it is binomial random variable :

For a binomial distribution :

P(x) = nCx * p^x * (1 - p)^(n-x)

Since the variables given are enough to create and use a binomial probability distribution, then x is approximately a binomial random variable.

Answer:

Step-by-step explanation:

It is a little vague on what the expected answer is. But for quadrilaterals, any rotational symmetry will be along a line that divides the quadrilaterals in two equal halves. This is due to symmetry.

Also the two equal halves will be mirror image of each other at the axis of symmetry. It is again due to properties of symmetry.

Lastly rotating a quadrilateral along its axis of rotational symmetry will create a 3-D cylindrical shape. A cross-section of that shape along the axis will show the same quadrilateral.

Answer:

t=-1

Step-by-step explanation:

t - 2(3 - 2t) = 2t - 9

t - 6 + 4t = 2t - 9

5t - 6 = 2t - 9

5t - 2t = -9 + 6

3t = -3

t= -1

Answer:

DATE                EVENT

Early September—Mid-October 2020 Register through your school counselor

Mid-October 2020 Receive your Test Ticket and/or Audition Ticket w/specific date, time, and location

October 26 & 27, 2020 (Subject to change) 8th grade SHSAT

November 2 & 17, 2020 (Subject to change) 9th Grade SHSAT

Other Events:

SHSAT make-up test

SHSAT for 8th and 9th grade students who are English Language Learners or students with disabilities who have IEPs or approved 504 plans

Early—Mid November 2020 LaGuardia High School Auditions, in alphabetical order by last name, borough by borough (Bronx, Brooklyn, Manhattan, Queens/Staten Island)

March 2021 Receive SHSAT scores and Specialized High School admission results through your school counselor

Step-by-step explanation:

I looked it up.

Answer:

Undecided

Step-by-step explanation:

No one knows when it'll be, but probably soon.

Answer:

(6, 1)

Step-by-step explanation:

x + 3y = 9

x + 4y = 10

---------------------

-1 (x + 3y = 9)

---------------------

-x - 3y = -9

x + 4y = 10

      1y = 1  or y =1

x + 4y = 10

x + 4(1) = 10

x + 4 = 10

   -4     -4

x = 6

I hope this helps!

If triangle ABC is reflected across the x axis, the new point is A'(-3, -2), B'(0, -1) and C'(-2, 3)

Transformation is the movement of a point from its initial location to a new location. Types of transformation are reflection, rotation, translation and dilation.

Triangle ABC has vertices A(-3,2) B(0,1) and C(-2,-3).

If triangle ABC is reflected across the x axis, the new point is A'(-3, -2), B'(0, -1) and C'(-2, 3)

Find out more on transformation at: https://brainly.com/question/1620969

Answer:

B. y-1 = -2(x-3)

I think because the line met there

Answer:

69.24

Step-by-step explanation:

i did the quiz

Answer:

68.24

Step-by-step explanation:

- - - - - - - - - - - - - - - -

There is some unnecessary information in the problem, first, it should be removed.

"The dosage of cough medicine for a child 4 to 6..."

"2 days"

Listing the age and days don't matter here, it's the rest of the problem that matters!

- - - - - - - - - - - - - - - -

"1/2(a teaspoon) every 4 hours,"  This is one dose. Multiply 1/2 by five to see how many teaspoons are consumed.

1/2 x 5 = 2 1/2 (teaspoons)

- - - - - - - - - - - - - - - -

Good luck! :)

~pinetree

Answer:

1234567890

Step-by-step explanation:

Each of the digits is divisible by their individual index in the number. Adding a 0 at the ends allows for the number to be divisible by 10 and completes the 10 digit requirement.

The first digit is divisible by 1

The second digit is divisible by 2

The third digit is divisible by 3

The fourth digit is divisible by 4

The fifth digit is divisible by 5

The sixth digit is divisible by 6

The seventh digit is divisible by 7

The eigth digit is divisible by 8

The ninth digit is divisible by 9

The full number is divisible by 10

Step-by-step explanation:

1.5 mill + 40 cent per

sell for 75 per

change numbers

1, 500, 000 + 4 per

sell for 75 per

x = each sneaker

1, 500, 000 + 4 x

sell for 75 x

we want to sell 15, 000

put 15, 000 where x is

1, 500, 000 + 4 (15, 000)

sell for 75 (15, 000)

1, 500, 000 + 4 × 15, 000 = 1, 560, 000

sell for 75 × 15, 000 = 1125000

minus the amount to make sneakers from amount getting for the sneakers

loss = ?

answer in comments

please mark brainest

later

Step-by-step explanation:

Answer:

a= 11 to the power of 2. check the formula dude.

Answer:

3 and 4 x=25, y=29

Step-by-step explanation:

If you need a step by step explanation, I will edit this later.

Answer:

$422.50

Step-by-step explanation:

If the bike is marked down by 35% then the final sale price will be 65% of the original price (since 100% - 35% = 65%).

Convert 65% into a decimal:  65% = 65/100 = 0.65

Therefore, 65% of $650 = 0.65 × 650 = $422.50

We need first mark downed amount

[tex]\\ \rm\Rrightarrow 0.35(650)=227.5[/tex]

Marked down price

Answer:

you need to use the midpoint formula

Answer:

MN is [-3,2] sorry but not really sure about this because they are just two points and don't seem as segment.But when it asks for MN I don't know what to say else.

and midpoint of MN is -1/2

because

x=(x1+x2)/2=(-3+2)/2=-1/2

Answer:

There are 2.5 grams of niacin contained in the bottle.

First you have to find how many milligrams are in the bottle.

So you multiply 125 by 20 since there are 125 tablets and 20 milligrams in each one.

125*20=2500

So there are 2500 milligrams in the bottle. Then you have to convert it into grams. To do that you divide the mass by 1000.

2500/1000=2.5

So there are 2.5 grams in the bottle.

Step-by-step explanation: hope this helps :)

Answer:

2.5

Step-by-step explanation:

125 vitamins, each vitamin has 20 milligrams. convert 20 milligrams to grams. 0.02 grams of niacin in each vitamin. 125 multiplied by 0.02 is 2.5

Answer:

each input has exactly one output.

Step-by-step explanation: input can only have one output for the table to be a function

Answer:

Line u shows the movement of the ladybug. Because line v goes farther than line u

Step-by-step explanation:

Because line v goes farther than line u

The ladybug's motion is depicted in line u. Because line v is moving farther than line u.

The amount of the shift in approach per unit of time or the size of the displacement over time for an object can be used to describe speed, which would be a scalar quantity in everyday language and kinematics.

The maximum speed that can be maintained when a period grows closer to zero is the starting speed.

By dividing the object's distance traveled by the duration of the interval, the mean pace of the object for the given period is calculated. Speed and velocity are not always the same thing.

The line u and v show the position of the two bugs, but the line that shows the ladybug's movement is line u because line v is moving farther than line u.

To know more about Speed:

https://brainly.com/question/28224010

#SPJ2

Answer:

You have earned $67.50

Step-by-step explanation:

Since we are working with simple interest, we will use this formula:

[tex]I=Prt[/tex],

where P represents the principal amount (your deposit), r represents the rate as a decimal, and t represents the time in years. First, we need to rewrite our interest as a decimal by dividing 3% by 100:

[tex]3\div 100 = 0.03[/tex]

Now, we also know the values of P and t from the problem:

[tex]P=750\\r=0.03\\t=3[/tex]

We can substitute those values into the formula:

[tex]I=750(0.03)(3)\\I=67.5[/tex]

In context, that means you earned $67.50 in interest.

Answer: Anything between 0 and 10, excluding both endpoints.

In terms of symbols we can say 0 < w < 10 where w is the width.

===================================================

Explanation:

You could do this with two variables, but I think it's easier to instead use one variable only. This is because the length is dependent on what you pick for the width.

w = width

2w = twice the width

2w-5 = five less than twice the width = length

So,

which lead to

area = length*width

area = (2w-5)*w

area = 2w^2-5w

area < 150

2w^2 - 5w < 150

2w^2 - 5w - 150 < 0

To solve this inequality, we will solve the equation 2w^2-5w-150 = 0

Use the quadratic formula. Plug in a = 2, b = -5, c = -150

[tex]w = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\w = \frac{-(-5)\pm\sqrt{(-5)^2-4(2)(-150)}}{2(2)}\\\\w = \frac{5\pm\sqrt{1225}}{4}\\\\w = \frac{5\pm35}{4}\\\\w = \frac{5+35}{4} \ \text{ or } \ w = \frac{5-35}{4}\\\\w = \frac{40}{4} \ \text{ or } \ w = \frac{-30}{4}\\\\w = 10 \ \text{ or } \ w = -7.5\\\\[/tex]

Ignore the negative solution as it makes no sense to have a negative width.

The only practical root is w = 10.

If w = 10 feet, then the area = 2w^2-5w results in 150 square feet.

----------------------

Based on that root, we need to try a sample value that is to the left of it.

Let's say we try w = 5.

2w^2 - 5w < 150

2*5^2 - 5*5 < 150

25 < 150 ... which is true

This shows that if 0 < w < 10, then 2w^2-5w < 150 is true.

Now try something to the right of 10. I'll pick w = 15

2w^2 - 5w < 150

2*15^2 - 5*15 < 150

375 < 150 ... which is false

It means w > 10 leads to 2w^2-5w < 150  being false.

Therefore w > 10 isn't allowed if we want 2w^2-5w < 150 to be true.

Answer: See attached image

Step-by-step explanation:

• Can you list down similarities of your experience with your circle of friends?

Answer:

the answer is 1017.8760 in cube

If the scale I make for the parking lot is 10 inches long, it should be 7.5 inches wide.

Scale is a term to refer to a drawing and design method in which an object or space and its actual measurements are taken as a reference and subsequently reduced or increased while maintaining the proportions between their measurements.

To calculate the width of the parking lot to scale, it is necessary to perform the following mathematical operation.

We need to figure out how much 100 yards is on the inch scale model. So if 400 yards is 10 inches we must divide this value by 4 as shown below:

Based on the above, 100 yards equals 2.5 inches on this model. So if your width is 300 yards, the length in inches would be 7.5 inches.

Learn more about scales in: https://brainly.com/question/19896181

Answer: a. 0.00032    B. 0.00672

Step-by-step explanation:

Given: Proportion of  island residents of a country have reduced their electricity usage (p) = 20%= 0.20

Here, residents have two choices either reduced electricity usage or not , hence it follows binomial distribution

Let X be a binomial variable that represents the number of successes .

Binomial distribution formula:

[tex]P(X)=^nC_xp^x(1-p)^{n-x}[/tex], n= sample size.

a.

[tex]P(X=5) = ^5C_5(0.20)^5(1-0.20)^{5-5}=(1)(0.20)^5(1)\\\\=0.00032[/tex]

b. [tex]P(X\geq4)=P(4)+P(5)[/tex]

[tex]^5C_4(0.20)^4(1-0.20)^{5-4}+0.00032\\\\=(5)(0.20)^4(0.80)+0.00032\\\\=0.0064+0.00032\\\\=0.00672[/tex]

We will see that the length of the minute hand is 9.6 cm.

We know that for a circle of radius R, the length of the arc defined by an angle of θ is:

L = θ*R

In this case, the length of the arc is 15 cm, and the angle is the one between 1:15 and 1:30, which is one-fourth of a complete circle.

If a complete circle has an angle of 2pi, then one-fourth of a circle has an angle θ = (2pi)/4 = pi/2

Then, replacing the length of the arc and the angle we have:

15cm = (pi/2)*R

Now we can solve this for R, remember that pi = 3.14:

(15 cm)*(2/3.14) = R = 9.6cm

So the length of the minute hand is 9.6 cm.

So the correct option is the second one.

If you want to learn more about circles, you can read:

https://brainly.com/question/25938845

Answer:

B: 9.6cm

Step-by-step explanation:

took the test

Answer:

it has 3 angles and that angle is x