3 years ago

What is the solution of 7^3x = 400?

2 answers:

7 0

X= 400/343 simplify each side of the equation and isolate the variable

6 0

Hi,
$7^{3x}=400\\\\

3x*ln(7)=ln(400)\\\\

x= \dfrac{ln(400)}{3*ln(7)} \\\\

x =1,026334566...
\\x\approx 1.03$

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