Find the slope of the line through each pair of points. 11) (18,, -15) onu nositi

10/13

Step-by-step explanation:

(5 - (-15)) divided by (18 - (-8))

(5 + 15)/(18 + 8)

20/26 or 10/13

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:

d

step-by-step explanation:

i used the pitagoras theoreme