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Mathematics 18 Online
OpenStudy (anonymous):

5^(x+5)=9^(x)

OpenStudy (hba):

Use log

OpenStudy (anonymous):

?

OpenStudy (anonymous):

log(5^(x+5))=log(9^(x)) (x+5)log5=xlog9 xlog5 + 5log5 = xlog9 5log5 = xlog9 - xlog5 5log5 = x(log9-log5) 5log5 = x(log(9/5)) 5log5/(log(9/5)) = x

OpenStudy (anonymous):

thanks

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