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3 years ago

5

Joe’s balance in his checking account at the beginning of the month was $132. At the end of the month, it was 15.3% higher. What

was his balance at the end of the month?

1 answer:

Contact [7]3 years ago

4 0

The answer would be $152.20 because 132*1.153=152.196, rounded to $152.20.

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$\bf \textit{perpendicular, negative-reciprocal slope for slope}\quad \cfrac{a}{b}\\\\
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-------------------------------\\\\$

$\bf \boxed{5i+12j}\implies 
\begin{array}{rllll}
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\\\\\\
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\\\\\\
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if we were to place <5, 12> in standard position, so it'd be originating from 0,0, then the rise is 12 and the run is 5.

so any other vector that has a negative reciprocal slope to it, will then be perpendicular or "orthogonal" to it.

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or using a unit vector for those above, then

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\cfrac{-12,5}{\sqrt{12^2+5^2}}\implies \cfrac{-12,5}{13}\implies \boxed{\cfrac{-12}{13}\ ,\ \cfrac{5}{13}}$

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