safrayw22 safrayw22
  • 01-07-2019
  • Mathematics
contestada

-15
-3
3
15
Pls help idk this

15 3 3 15 Pls help idk this class=

Respuesta :

choixongdong
choixongdong choixongdong
  • 01-07-2019

Answer:

-3

Step-by-step explanation:

4^x = (1/8)^(x+5)

(2^2)^x =  (2^-3)^(x+5)

2^2x = 2^(-3x - 15)

Since both sides have the same base of 2, then the exponents are equal

So

2x = - 3x - 15

5x = -15

 x = -3

Answer Link
marcthemathtutor
marcthemathtutor marcthemathtutor
  • 01-07-2019

Answer:

-3

Step-by-step explanation:

see attached

Ver imagen marcthemathtutor
Answer Link

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