3(p+8)/1= -6(p+6)/-3 (What is p?)
-3(-4 - b) = 5- 8b/4 (What is b?)
4n -40 = 7(-2n+2) (What is n?)
7(5a-4)-1=14-8a (What is a?)
-31 - 4x = -5 - 5(1+5x) (What is x?)
38+7k=8(k+4) (What is k?)
3(1-3x) = 2(-4x + 7) (What's x?)
-3(x-1)+8(x-3)= 6x+7-5x (What is x?)

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:

26?

step-by-step explanation:

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: