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Katyanochek1 [597]

3 years ago

7

You put $300 in the bank of warmerdam and onto $44 in interest. What was the percent interest rate? Round to the nearest percent

.

1 answer:

Ludmilka [50]3 years ago

3 0

Approximately 15% interest rate

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Step-by-step explanation:

since you are subtracting a negative number it reverses, so you actually ADD the two together

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$\bf \textit{circumference of a semi-circle}\\\\
C=\pi r\qquad 
\begin{cases}
r=radius\\
-----\\
C=5.14
\end{cases}\implies 5.14=\pi r\implies \boxed{\cfrac{5.14}{\pi }=r}\\\\
-------------------------------\\\\
\textit{area of a semi-circle}\\\\
A=\cfrac{\pi r^2}{2} \implies A=\cfrac{\pi }{2}r^2\implies A=\cfrac{\pi }{2}\left( \boxed{\cfrac{5.14}{\pi }} \right)^2
\\\\\\
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