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marusya05 [52]
4 years ago
8

How long will a plane flying at a speed of 160 miles per hour take to travel a distance of 1,120 miles?

Mathematics
2 answers:
Dominik [7]4 years ago
7 0
It would take 7 hours for a plane to travel 1,120 miles at 160 MPH. 
1,120/160 = 7
Nataly [62]4 years ago
4 0
It would take about 7H hop this..XD
 
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Answer:

Rate at which the shadow is moving = -5 ft/s.

Step-by-step explanation:

I can do the second part for you:

If the distance of the woman from the wall is  Xp , the length of the shadow is Xs and the distance from the tip of the shadow to the wall is X we have the relation:

X = Xp + Xs.

We need to find X' (the rate that the tip of the shadow is moving).  at Xp = 16 and X'p  = -4 ft/s.

We need a relation between X and Xp so we have to eliminate Xs.

By similar triangles 5.5 / 27.5 = Xs / x

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Xs = x /5 so substituting in the above relation:

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Taking derivatives:

X' = 5X'p / 4

Now X'p is given as - 4 so

X' = -20/4 = -5 ft/s.

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Step-by-step explanation:

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