Gavin has nickels, dimes and quarters in a ratio of 8:1:2 if Gavin's coins are quarters, how many nickels and dimes dose gavin have?

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)

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okay wait before i answer, is this for your points on a graph?

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what grade level is this? need to know so i can look in my old textbooks!

alright well the answers to your question is

2xy/9 hope this have a nice day : )

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