Question

1 Which number is equivalent to 5 to the -1 power? (A)-5 (B)-1/5 (C) 1/5 (D) 5

Answer 1

The given number is

`5^(-1)`

Here we need to use a power property

`a^(-n)=(1)/(a^n)`

As you can see, the property allows us to move the position of the power in order to have a positive exponent. Let's do that

`5^(-1)=(1)/(5)`

Therefore, the right answer is C.