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anonymous
 5 years ago
How do you solve 4^x=20
anonymous
 5 years ago
How do you solve 4^x=20

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Are you supposed to use a calculator for this problem or not?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0It would be hard to do without. I know I can't do logarithms in my head.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Well it's possible that her instructor doesn't want an exact answer. That's why I'm curious.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The calculator is allowed.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ok. Your going to convert to a logarithm. A log means that: the BASE of the log TO THE POWER of the ANSWER of the LOG will equal the number that's in ur log.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0But what your going to have to do is the change of base formula.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Do you know how to do that?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok. So what we're going to have after you convert to the form of the log is \[\log_{4} 20 = x\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0To find the answer of this we need to use the change of base formula. The change of base formula says that you take the log of your argument (20) and divide it by the log of your base (4).

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0When you do this, you should get the correct answer. But check to be sure if possible.
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