Joe is finding the length of a rectangular prism. The volume of the prism is 204 it. The width is 3.5 ft, and the height is 5 ft His work is shown below.
204-35(5)
204–8.57
204 8.5
8.5 8.5'
24=1
What error did Joe make?
He incorrectly substituted into the volume formula
He added 3.5 and 5 when he should have multiplied them.
He incorrectly divided 204 by 8.5.
He did not make a mistake in finding the length of the prism.​

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

it would take 7/10 of an hour too fill the pool.

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3

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