Question

Need help: this is a math problem p

Answer 1

B and B

Explanation:

using the rules of exponents

•
`(a^(m)) ^(n)` =
`a^(mn)`

•
`a^(-m)` =
`(1)/(a^(m) )`

given

`(9^(-2)) ^(8)`

=
`9^(-2(8))`

=
`9^(-16)`

=
`(1)/(9^(16) )`

13

5 ×
`10^(-4)`

= 5.0 ×
`10^(-4)`

the exponent - 4 , tells us to move the position of the decimal point back to the left by 4

5.0 ×
`10^(-4)` = 0.0005