How do i find a fraction of a number

You take the number and divide it by the denominator then times it by the numerator

Step-by-step explanation:

EG: 1/4 of 20

1. 20 divided by 4 = 5

2. 5 times 1 = 5

The answer is 5

A harder one

4/6 of 168

1. 168 divide by 6 = 28

2. 28 times 4 = 112

Answer is 112

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.

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: