Respuesta :

Answer:

[tex]7^{5}[/tex]

Step-by-step explanation:

using the rule of exponents

[tex]\frac{a^{m} }{a^{n} }[/tex] = [tex]a^{(m-n)}[/tex] , then

[tex]\frac{7^{-4} }{7^{-9} }[/tex]

= [tex]7^{-4-(-9)}[/tex]

= [tex]7^{-4+9}[/tex]

= [tex]7^{5}[/tex]

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