What' is 8.2 times 10 to the negative second power in decimal form

Which of the following is the rational exponent expression of 6 root f

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

Identify the number 127 as a rational or irrational. explain