Question

Which of the following is equivalent to 7^-2?

Answer 1

C

Explanation:

Answer 2

C.
`(1)/(49)`

Explanation:

When one puts a number to a negative exponent, such as;

`a^(-b)`

One is essentially doing;

`(1)/(a^(b))`

Applying that knowledge;

`7^(-2) \\= (1)/(7^(2))\\= (1)/(49)`