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TEA [102]
2 years ago
11

You can paint a room in 8 hours. Working together, you and a friend could paint the same room in just 5 hours. How long would it

take your friend to paint the room alone.
Mathematics
1 answer:
Degger [83]2 years ago
5 0

Answer:

friend alone could do it in 13 hours and 1/3

Step-by-step explanation:

Your rate = room/8

friends rate = room/x

combined rate = room/8 + room/x

= room(x+8)/(8x)

then

5 = room / [room(x+8)/(8x)]

5 = 8x/(x+8)

8x = 5x + 40

3x = 40

x = 40/3 = 13 1/3

friend alone could do it in 13 hours and 1/3

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Lorico [155]
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8 0
3 years ago
Please help this is due in 20 mins, I will give brainliest
eduard

Answer:

L = 5\sqrt{10}

Step-by-step explanation:

use Pythagorean Theorem:

L² + (5\sqrt{2})² = (10\sqrt{3})²

L² + 25(2) = 100(3)

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L = \sqrt{250} = \sqrt{25} · \sqrt{10} = 5\sqrt{10}

6 0
2 years ago
Read 2 more answers
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Reptile [31]
CD:2 at $16.99 each=$33.98
DVD:1 at $36.29
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round to the nearest tenth:
4.74
Andrian will pay 
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6 0
3 years ago
Pleas help me (and pls don't ban my question this time Brainly)
Evgesh-ka [11]

Answer:

d = 7.2

Step-by-step explanation:

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subtract 12 from both sides and you get

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5 0
2 years ago
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Your hair is growing at 1 inch per month. You got your hair cut to 4 inches in length. Write and equation that gives the length
Korvikt [17]

Answer:

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Step-by-step explanation:

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2 years ago
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