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Zinaida [17]
3 years ago
14

A ladder, with its foot in the street, makes an angle of 30 degrees with the street when its top rests on a building on one side

of the street and makes an angle of 40 degrees with the street when its top rests on a building on the other side of the street. Then there is a 10 ft wide sidewalk on each side of the street. If the ladder is 50 ft long, how wide is the street?
52ft
72ft
62ft
42ft
Mathematics
1 answer:
Harrizon [31]3 years ago
6 0
The answer would be 82 ft
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Answer:

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Figure the rates per hr.

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So, the rates are not the same.

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The next step is to fit a line to them.

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Call the change in y, dy (for delta y).

Call the change in x, dx (for delta x).

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That checks.

Now to figure an 8-hr job, set x=8 and use the equation"

y = 25*8 + 35.

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That means an 8-hr job costs $235.

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2 years ago
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aleksklad [387]
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