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2 years ago

X -(4x- 7) = 5 x- ( x+ 21

Mathematics

1 answer:

Solnce55 [7]2 years ago

6 0

Answer:

x=4

Step-by-step explanation:

The question is

Find the value of x

we have

$x-(4x-7)=5x-(x+21)$

solve for x

Eliminate parenthesis both sides

Remember that

$(-1)(-1)=+1\\(-1)(+1)=-1$

$x-4x+7=5x-x-21$

Combine like terms

$-3x+7=4x-21$

Group terms that contain the same variable

$4x+3x=7+21\\7x=28\\x=4$

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Answer:

Radius of large cylinder $= 10.39 feet\\$

Step-by-step explanation:

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Or it can also be written as

$\pi r^{2} h = 6782.4 ft^3\\(3.14) * ( r^2) 20 = 6782.4 ft^3\\r^2 = 108\\r = 10.39$

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3 years ago

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