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3 years ago

8

Peter buys 8.5 square feet of carpet. The carpet costs $10.20 per square foot. How much does Peter pay for the carpet?

1 answer:

Solnce55 [7]3 years ago

7 0

This is what i did to solve

8.5*10.2=$86.70

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(will give BRAINLIEST)The formula for the perimeter of a rectangle Is P = 2(1+w). Part A. Rewrite the formula for the perimeter

shepuryov [24]

A. W = P/2 - 1

B. First you need to divide both sides by 2 to get rid of the 2 on the side of the w. Then you need to take 1 away from both sides.

Whatever you do to one side, you must do to the other.
Hope this helps x

4 0

3 years ago

Find the height of a cylinder with a surface area of 108 pi square meters. The radius of the cylinder is twice the height.

myrzilka [38]

Let
x---------> radius of the cylinder
y---------> the height of the cylinder

we know that
x=2y
[surface area of cylinder]=2*[pi*r²]+2*pi*r*h
surface area=108*pi m²
r=x
h=y
x=2y
108*pi=2*[pi*(2y)²]+2*pi*(2y)*y
108*pi=8*pi*y²+4*pi*y²
108*pi=12*pi*y²
y²=108/12
y²=9----------> y=√9--------> y=3 m
x=2y-------> x=2*3-----> x=6 m

the answer is
the height of the cylinder is 3 m

4 0

3 years ago

Please help me solve this question will give you braisnlt !

DIA [1.3K]

Answer:

$s = 54m +160$

Step-by-step explanation:

Given: The attachment

Required: Determine the equation

We start by picking any two equivalent points on the table:

$(m_1,s_1) = (2,268)$

$(m_2,s_2) = (4,376)$

Next, we determine the slope, M:

$M = \frac{s_2 - s_1}{m_2 - m_1}$

$M = \frac{376 - 268}{4-2}$

$M = \frac{108}{2}$

$M = 54$

The equation is then calculated as:

$s - s_1 = M(m - m_1)$

Where:

$M = 54$

$(m_1,s_1) = (2,268)$

So, we have:

$s - 268 = 54(m - 2)$

Open bracket

$s - 268 = 54m - 108$

Collect like terms

$s = 54m - 108 + 268$

$s = 54m +160$

Hence, the equation is: $s = 54m +160$

6 0

2 years ago

A sample of 20 account balances of a credit company showed an average balance of $1,170 and a standard deviation of $125. You wa

Lady_Fox [76]

Answer:

The P-value for this test is P=0.2415.

Step-by-step explanation:

We have to perform an hypothesis testing on the mean of alla account balances.

The claim is that the mean of all account balances is significantly greater than $1,150.

Then, the null and alternative hypothesis are:

$H_0: \mu=1150\\\\H_a: \mu>1150$

The sample size is n=20, with a sample mean is 110 and standard deviation is 125.

We can calculate the t-statistic as:

$t=\dfrac{\bar x-\mu}{s/\sqrt{n}}=\dfrac{1170-1150}{125/\sqrt{20}}=\dfrac{20}{27.95}=0.7156$

The degrees of freedom fot this test are:

$df=n-1=20-1=19$

For this one-tailed test and 19 degrees of freedom, the P-value is:

$P-value=P(t>0.7156)=0.2415$

8 0

3 years ago

Six friends earned $645 for painting some rooms in a neighbors house. If they divide the money equally, how much will each frien

raketka [301]

Each friend would get $107.5

7 0

3 years ago