Respuesta :

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:

4) [tex]\frac{1}{9^{5} }[/tex]

Step-by-step explanation:

Using exponent rules: [tex]\frac{9^{2} }{9^{7} } =\frac{1}{9^{-2}*9^{7} } =\frac{1}{9^{5} }[/tex]

Or

[tex]\frac{9^{2} }{9^{7} } =\frac{9*9}{9*9*9*9*9*9*9}[/tex] Cancel out the nines that you can

[tex]\frac{1}{9*9*9*9*9} =\frac{1}{9^{5} }[/tex]

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