Ryan has read 30% of the pages of his book on monday if he read 45 pages how many pages does the book have

150

Step-by-step explanation:

30%=45

30%x3=90%

45x3=135

30%/3=10

45/3=15

10%=15

135+15=

150

side side side

side angle angle

angle side angle

side angle side

step-by-step explanation:

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: