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Dimas [21]
3 years ago
14

Solve for x Need help with this last question

Mathematics
1 answer:
Serhud [2]3 years ago
6 0

Answer:

x = 8

Step-by-step explanation:

2(78°) = 20x - 4

156 = 20x - 4

add 4 to each side of the equation:

160 = 20x

divide both sides by 20:

x = 8

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Time to paint the living room. The room measures 20 feet wide by 30 feet long by 12
chubhunter [2.5K]

The cost to paint the walls and the ceiling is $855

<h3></h3><h3>How much will it cost?</h3>

First, we need to find the area that will be painted.

The area of two of the walls is:

A = 20ft*12ft = 240ft²

The area of the other two walls:

A' = 30ft*12ft = 360ft²

The area of the ceiling is:

A'' = 20ft*30ft = 600ft²

We also need to subtract the areas of the two doors and the 4 windows.

Each door is 7ft by 3ft, so the area of each door is:

a = 7ft*3ft = 21ft²

Each window is 4ft by 3ft:

a' = 4ft*3ft = 12ft²

Then the total area that will be painted is:

area = 2A + 2A' + A - 2a - 4a'

area = 2*( 240ft²) + 2*(360ft²) + 600ft² - 2*(21ft²) - 4*(12ft²)

area = 1,710 ft²

We know that we need two coats of paint to cover that area, and the cost per square foot of paint is $0.25, then the total cost is:

C = $0.25*2*(1,710) = $855

The cost to paint the walls and the ceiling is $855

If you want to learn more about areas:

brainly.com/question/24487155

#SPJ1

6 0
2 years ago
A farmer collects 8 bushels of apples. Each bushel contains 126 apples. If she sells 2 and 1/2 bushels to a local store, how man
Vaselesa [24]
The farmer has 819 apples left
4 0
3 years ago
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‼️‼️HELP PLEASE‼️‼️‼️‼️
galben [10]
Add all of the numbers also add me on snap ava425
6 0
4 years ago
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HELP ASAP I will mark brainliest for the correct answer
muminat

Answer:

#11 is correct

#12 is correct

Step-by-step explanation:

4 0
3 years ago
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HELP PLEASE ASAP!!!
Bas_tet [7]
A. It's a composite function, so basically, wherever you see a p, replace it with 5t, because we are given that information. So, your answer is:
A[p(t)] = 5t \pi 2=10t \pi

B. Let's use the function we created, and just plug in 2 for t:
A[p(2)]  = 10(2) \pi
A[p(2)] = 62.83

So, your answer is (approximately) 62.83 units².
3 0
3 years ago
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