3 years ago

5(n+1) equals 2 ( n+ 7)

1 answer:

5 0

The wording is confusing but I am going to guess it is 5(n+1)=2(n+7). So 5xn=5n and 5x1=5. 5n+5=2(n+7). Then 2xn=2n and 2x7=14. The question now stands 5n+5=2n+14. Then 5n+2n=7n and 14-5=9. So, you have 7n=9. Then you divide both sides by 7 and get n=1.2857...

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3^2•3^n simplifies to 3^20 what is the value of the exponent n?

Lemur [1.5K]

Given that:
$3^2 \times 3^n = 3^20$
Solving for n.
Divide both sides by 3²
$\frac{3^2 \times 3^n}{3^2} = \frac{3^{20}}{3^2}$
Simplify
$3^n= 3^{20-2} \\
3^n=3^{18} \\$
$if \ a^{f(x)}=a^{g(x)} , \ then \ f(x)=g(x)$
So, n=18

Answer: n=18

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laila [671]

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Step-by-step explanation: