isabellemaine isabellemaine

18-12-2018
Mathematics

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I AM GIVING 10 POINTS TO WHOMEVER ANSWERS THIS!!!

Simplify: 9^-5 × 9^-3
A) 1/9^8
B) 1/9^2
C) 9^8
D) 9^15

Respuesta :

mathstudent55 mathstudent55

18-12-2018

Answer:

A) (1/9)^8

Step-by-step explanation:

9^-5 × 9^-3 =

Rule: a^m * a^n = a^(m + n)

= 9^-8

Rule: (a^m)^n = a^(mn)

= (9^-1)^8

Rule: a^-m = 1/a^m

= (1/9)^8

Answer: A) (1/9)^8

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