If you add the lengths (in inches) of all the fish in a tank, there should be at least one gallon of water for each inch. sam has five fish of the following lengths: 1 1/4in, 1 1/2in, 1 5/8in, 1 3/4in, and 1 7/8in. what is the minimum amount of water his fish tank should contain?

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:

idk

step-by-step explanation: