abbijohnson2000 abbijohnson2000

07-03-2018
Mathematics

contestada

Keisha is solving the equation 7^x=9.
Write an equation that shows the first step she should take.
(logarithms)

Respuesta :

jdoe0001 jdoe0001

07-03-2018

[tex]\bf \textit{Logarithm of exponentials}\\\\ log_a\left( x^ b \right)\implies b\cdot log_a(x)\\\\ -------------------------------\\\\ 7^x=9\implies \boxed{log(7^x)=log(9)}\implies x\cdot log(7)=log(9) \\\\\\ x=\cfrac{log(9)}{log(7)}[/tex]

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