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Mathematics 8 Online
OpenStudy (anonymous):

exponent/log question: if 25^2c=sqrt(5)^(4c-14) does c equal 7?

OpenStudy (anonymous):

I assume you mean this: \[25^{2c}=\sqrt5^{4c-14}\]

OpenStudy (anonymous):

Yes! Look at you and your brilliant use of text formatting. :)

OpenStudy (anonymous):

OK, in that case we can take the log base 5 of both sides. \[2\times2c=1/2\times(4c-14)\] Solve for c.

OpenStudy (anonymous):

Do I distribute the half first? which would make it 2c-7, sorry, my algebra's a little dusty.

OpenStudy (anonymous):

I got -7/2.

OpenStudy (anonymous):

Yes, distribute the half. You've got it!

OpenStudy (anonymous):

Sweet! Thank you very much!

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