2 years ago

How old am I if 300 reduced by 2 times my age Is 114

Mathematics

2 answers:

Nadusha1986 [10]2 years ago

8 0

The formula would be (a-c)/b=x and when you plug the formula in x=93

vova2212 [387]2 years ago

6 0

The answer is 93 years old.

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2log(x-3)+1=5<br><br> can someone explain how to solve for x?

Brums [2.3K]

$\bf 2log(x-3)+1=5\iff 2log_{10}(x-3)+1=5\\\\\\ 2log_{10}(x-3)=4
\\\\\\
log_{10}(x-3)=\cfrac{4}{2}\implies log_{10}(x-3)=2\\\\
-----------------------------\\\\
{{ a}}^{log_{{ a}}x}=x\impliedby \textit{using this cancellation rule}\\\\
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10^{\cfrac{}{}log_{10}(x-3)}=10^2\implies x-3=10^2\implies x=100+3$