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5 votes
For what vaule of x does 4^x =(1/8)^x-5.
-15
-3
3
15​

User Tefozi
by
8.8k points

1 Answer

5 votes

Answer:

3

Explanation:


4^x=(1/8)^(x-5) \\\\\\(2^2)^x=(2^(-3))^(x-5) \\\\\\2^(2x)=2^(-3x+15) \\\\\\2x=-3x+15 \\\\\\5x=15 \\\\\\x=3

Hope this helps!

User Brent Anderson
by
8.6k points

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