5^(x + 5) = 9^x … - QuestionCove

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Mathematics 10 Online

OpenStudy (anonymous):

5^(x + 5) = 9^x x ≈ -3.63 x ≈ -0.28 x ≈ 0.07 x ≈ 13.69

14 years ago

OpenStudy (anonymous):

Now you have to use natural log to solve for x

14 years ago

OpenStudy (anonymous):

take Ln of both sides to get (x+5)Ln5 = xLn9 expand to xLn5 + 5Ln5 - xLn9 = 0 isolate x x = 5Ln5 / (Ln5 - Ln9)

14 years ago

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