reednicholls1pdz6e7 reednicholls1pdz6e7

06-04-2020
Mathematics

contestada

For what value of a does 9 = (StartFraction 1 Over 27 EndFraction) Superscript a + 3?
A. Negative eleven-thirds
B. Negative seven-thirds
C. Seven-thirds
D. Eleven-thirds

Respuesta :

amna04352 amna04352

07-04-2020

Answer:

A

Step-by-step explanation:

9 = (1/27)^(a+3)

3² = (3^-3)^(a+3)

3² = 3^(-3a-9)

2 = -3a-9

-3a = 11

a = -11/3

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