Respuesta :

mhanifa

Answer:

  • b. 1/3²¹

Step-by-step explanation:

  • 3⁻⁹ / 3⁻¹² =
  • 3⁻⁹⁻¹² =
  • 3⁻²¹ =
  • 1/3²¹

Correct choice is b

[tex]\\ \rm\leadsto \dfrac{3^{-9}}{3^{-12}}[/tex]

[tex]\\ \rm\leadsto 3^{-9+12}[/tex]

[tex]\\ \rm\leadsto \dfrac{1}{3^3}[/tex]

Option A