3 years ago

The ratio of black pencils to colored pencils in Lauren's backpack is 1:9

Mathematics

1 answer:

Softa [21]3 years ago

8 0

Answer:

I don't really understand the question but...

2:18

3:27

4:36

5:45

6: 54

7:63

8:72

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You deposit $7550 in an account that pays 7.25% interest, compounded continuously. How long to the

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$~~~~~~ \textit{Continuously Compounding Interest Earned Amount} \\\\ A=Pe^{rt}\qquad \begin{cases} A=\textit{accumulated amount}\dotfill & \$\stackrel{tripled}{(7550)3}\\ P=\textit{original amount deposited}\dotfill & \$7550\\ r=rate\to 7.25\%\to \frac{7.25}{100}\dotfill &0.0725\\ t=years \end{cases}$

$3(7550)=7550e^{0.0725\cdot t}\implies \cfrac{3(7550)}{7550}=e^{0.0725t}\implies 3=e^{0.0725t} \\\\\\ \log_e(3)=\log_e\left( e^{0.0725t} \right)\implies \ln(3)=0.0725t \\\\\\ \cfrac{\ln(3)}{0.0725}=t\implies 15.15327\approx t\implies 15\approx t$