Question

Please help I've tried calculators but none show any of these.

Answer 1

4)
`(1)/(9^(5) )`

Explanation:

Using exponent rules:
`(9^(2) )/(9^(7) ) =(1)/(9^(-2)*9^(7) ) =(1)/(9^(5) )`

Or

`(9^(2) )/(9^(7) ) =(9*9)/(9*9*9*9*9*9*9)` Cancel out the nines that you can

`(1)/(9*9*9*9*9) =(1)/(9^(5) )`

Answer 2

It is number four

Step-by-step explanation: when you have a dividing one such as this you subtract the exponents which would give you 9^-5 but you can’t have a negative so make a fraction and its a positive