Respuesta :

sqdancefan

Answer:

  3³ = 27

Step-by-step explanation:

The applicable rules of exponents are ...

  a^b = 1/a^-b

  (a^b)(a^c) = a^(b+c)

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  [tex]\dfrac{3^{-9}}{3^{-12}}=(3^{-9})(3^{12})=3^{-9+12}=\boxed{3^3=27}[/tex]