What is the solution set of -50<7k+6<-8

(- 8, - 2 )

Step-by-step explanation:

Given

- 50 < 7k + 6 < - 8 ( subtract 6 from each of the 3 intervals )

- 56 < 7k < - 14 ( divide all 3 intervals by 7 )

- 8 < k < - 2

Solution set is (- 8, - 2 )

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: