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Varvara68 [4.7K]
2 years ago
7

Use the distributive property to solve the equation -2(x+5) =4

Mathematics
1 answer:
LekaFEV [45]2 years ago
3 0
-2x-10=4
add 10 to both sides
-2x=14
x=-7
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Remark
The easiest way to do this is to solve the sphere's volume in terms of pi. When you do this, you can equate that to the formula for a cylinder and cancel the pi values. 

Step One
Find the volume of the sphere.

<em>Givens</em>
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<em>Formula</em>
V = (4/3) pi r^3

<em>Sub and Solve</em>
V =  4/3 pi * 6^3
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Step two 
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<em>Givens</em>
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<em>Formula</em>
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<em>Sub and solve</em>
288 pi cm^3 = pi r^2 * 4.5    Divide both sides by pi
288 cm^3 = 4.5 r^2              Divide both sides by 4.5
388 / 4.5 = r^2
64 = r^2                                Take the square root of both sides.
r = square root( 64)
r = 8 <<<<< Answer

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