Question

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

Answer 1

Answer:

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

Answer 2

Answer:

4) $\frac{1}{9^{5} }$

Step-by-step explanation:

Using exponent rules: $\frac{9^{2} }{9^{7} } =\frac{1}{9^{-2}*9^{7} } =\frac{1}{9^{5} }$

Or

$\frac{9^{2} }{9^{7} } =\frac{9*9}{9*9*9*9*9*9*9}$ Cancel out the nines that you can

$\frac{1}{9*9*9*9*9} =\frac{1}{9^{5} }$