3 years ago

PLEASE HELP!!! I cannot figure this problem out.

Mathematics

1 answer:

nataly862011 [7]3 years ago

6 0

Answer:

A and C.

Step-by-step explanation:

to get rid of the square root & n, you would have to multiply it by n on both sides of the equation, giving you r^n=a.

also to get rid of the square root & n, you can also multiply both sides of a and r by the exponential fraction with n as the denominator:

$\sqrt[n]{a} =r \\(a)^\frac{1}{n} = r\\a\frac{1}{n} = r$

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2/3 b + 5 =20 - b solve for b

Wittaler [7]

Answer:

$b = 9$

Step-by-step explanation:

$\frac{2}{3} b + 5 = 20 - b$

In order to solve for b, we must isolate the variable. We can start by subtracting 5 from both sides.

$\frac{2}{3} b + 5 - 5 = 20 - b - 5$

Simplify.

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Add b to both sides.

$\frac{2}{3} b + b = 15 - b + b$

Simplify.

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Multiply everything by 3 to remove the fractions.

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Simplify.

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Simplify.

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Divide 5 from both sides.

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For more information on solving variables, check out the following answers!

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