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Vitek1552 [10]
3 years ago
8

Sam has 15 identical rectangular windows in his home. The length of each window is twice the width, and the area of each window

is 8 square feet. Sam wants to put weather stripping around the perimeters of all the windows. If the weather stripping costs $0.25 per foot, how much will he spend?
Mathematics
1 answer:
marshall27 [118]3 years ago
5 0
The answe would be 300 because, the perimeter of the windows is 12, then you have to multiply 25 to 12 then bam you get 300, yay!

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Elena cashed a check for $$4350 at Quick Cash. The fee to cash
serious [3.7K]

Answer:

522

Step-by-step explanation:

5 0
2 years ago
How to inverse this function step by step <br> f(x)=x-3/5
Nitella [24]

f(x)=x3−5

Replace f(x)

with y

.

y=x3−5

Interchange the variables.

x=y3−5

Solve for y

.


Since y

is on the right side of the equation, switch the sides so it is on the left side of the equation.

y3−5=x

Add 5

to both sides of the equation.

y3=5+x

Take the cube root of both sides of the equation to eliminate the exponent on the left side.

y=3√5+x

Solve for y

and replace with f−1(x)

.


Replace the y

with f−1(x)

to show the final answer.

f−1(x)=3√5+x

Set up the composite result function.

f(g(x))

Evaluate f(g(x))

by substituting in the value of g into f

.

(3√5+x)3−5

Simplify each term.


Remove parentheses around 3√5+x

.

f(3√5+x)=3√5+x3−5

Rewrite 3√5+x3

as 5+x

.

f(3√5+x)=5+x−5

Simplify by subtracting numbers.

.

Subtract 5

from 5

.

f(3√5+x)=x+0

Add x

and 0

.

f(3√5+x)=x

Since f(g(x))=x

, f−1(x)=3√5+x is the inverse of f(x)=x3−5

.

f−1(x)=3√5+x

5 0
3 years ago
A game shop sells marbles in clear plastic cylinders. Four marbles fit across the diameter of the cylinder and 10 marbles fit fr
slega [8]
To start, you know that this question is asking for the surface area of one of the cylinders, and the formula to finding the surface area of a cylinder is A=2πrh+2<span>πr^2.

Now, to find the surface area, you first need to figure out the height of the plastic cylinder and its radius. 
Since you know that the diameter (twice the radius) of the cylinder is equivalent to 4 marbles, and each marble has a diameter of 2 cm, the diameter of the cylinder would be 8 cm. Then, to find its radius, you divide by 2, so its radius is 4.
Now, since you know that the height of the cylinder is 10 marbles, you multiply 10 by 2 to get that the height is 20 cm tall. 
Since you now have the values of the height and the radius, plug the values into the surface area of a cylinder formula (r is radius and h is height).
</span>A=2π(4)(20)+2π(4)^2.
<span>Assuming that pi is 3.14, when you simplify this using PEMDAS, you get 
502.4+100.48 which then simplifies to 602.88, the area of the plastic to make one cylinder.



</span>
5 0
3 years ago
Help asap grade 5 math help fast help quick !!!
Alja [10]

Answer:

B and D

Step-by-step explanation:

A

\frac{5}{6} × 13 = \frac{5(13)}{6} = \frac{65}{6} = 10 \frac{5}{6} < 13

B

4 × 13 = 52 > 13

C

\frac{3}{4} × 13 = \frac{3(13)}{4} = \frac{39}{4} = 4 \frac{3}{4} < 13

D

\frac{10}{10} × 13 = 1 × 13 = 13

Band D are equal to or greater than 13

7 0
2 years ago
Read 2 more answers
Makayla was training for a 2k run. it was tiring, and she had to stop and walk to the finish line.if she had run 650 meters out
jonny [76]
She ran 21 inches. Thats your answer. sorry if im wrong
7 0
3 years ago
Read 2 more answers
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