How do you find percentages?
please show me the steps on how to do it

Find the percentage of the original or real number. The percentage of the original number as given in the math problem is 40%.

Multiply the final number by 100. You should multiply the final number as given in the math problem by 100. ...

Divide the result of the multiplication by the percentage.

Step-by-step explanation:

1, get whatever you want in fraction form

2. convert to a decimal.

3.move decimal 2 places.

10% off

10/100

.10

move twice and add a percentage symbol

10%

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: