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3 years ago

11

Susan wants to buy a paddle boat for $840. She'll pay 20% down and pay the rest in six monthly installments. What will be the am

ount of each monthly payment? A. $168 B. $112 C. $28 D. $140

1 answer:

Daniel [21]3 years ago

3 0

The correct answer would be b

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Answer: 70 meters.

Step-by-step explanation:

Observe the figure attached.

The distance between the walls is:

$DE=AD+AE$

<em />

Both triangles are right triangles. Therefore, you can calculate the distance between the walls as following:

- Calculate the distance AD:

$cos\alpha=\frac{adjacent}{hypotenuse}\\\\cos(60\°)=\frac{AD}{60}\\AD=30m$

- Calculate the distance AE:

$tan\beta =\frac{opposite}{adjacent}\\\\tan(45\°)=\frac{40}{AE}\\\\AE=\frac{40}{tan(45\°)}\\\\AE=40m$

Therefore the distance between the walls is:

$DE=30m+40m=70m$

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