which of the following is the solution to the equation in terms of the unknown constant a 8^(x-2a)= 1/2^(5a) x=1/3a x=5/2a x=-1/2a or x=-a?

2019-02-23 10:35 pm

回答 (4)

2019-02-24 12:01 am

The answer is as follows:

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2019-02-24 12:56 am

8^(x - 2a) = 1/2^(5a)
2^a = 8^x
x = a/3
Answer choice:
x=1/3a

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2019-02-23 10:41 pm

8 = 2^3
1/2 = 2^(-1)

Now rewrite the equation

2^(3*(x-2a)) = 2^(-1*(5a))

Can you take it from there? Just make the exponents equal on both sides.

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2019-02-23 10:36 pm

Sounds like a problem for your math teacher to help you with.

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