How do you solve 9^r=49?

1 Answer
Alan P.
Sep 18, 2016

r~~ 1.771243749

Explanation:

If 9^r=49
then
color(white)("XXX")log_9 9^r =log_9 49
and since log_9 9^r =r
color(white)("XXX")r=log_9 49

Use a calculator or spreadsheet to find
color(white)("XXX")log_9 49 ~~ 1.771243749

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