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Mathematics 7 Online
OpenStudy (anonymous):

2401^(2n)=343^(n+2)

OpenStudy (anonymous):

You have to use logarithms. In this case the answer is 6/5

OpenStudy (turingtest):

how do you figure?

OpenStudy (anonymous):

probably helps to know that \(2401=7^4\) and that \(343=7^3\)

OpenStudy (anonymous):

so you have \[7^{4\times 2n}=7^{3\times (n+2)}\] and therefore \[8n=3n+6\]

OpenStudy (anonymous):

solve for n and get \[5n=6\] \[n=\frac{6}{5}\]

OpenStudy (anonymous):

no logarithms were harmed in this solution

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