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xxTIMURxx [149]
3 years ago
7

A policeman is standing near a highway using a radar gun to catch speeders. He aims the gun at a car that has just passed his po

sition and, when the gun is pointing at an angle of 45(degrees) to the direction of the highway, notes that the distance between the car and the gun is increasing at a rate of 100km/h. How fast is the car travelling?
...?
Mathematics
1 answer:
Serhud [2]3 years ago
4 0
The speed obtained is the y-component of the actual speed of the car. The y-component and actual speed are related by:
Vy = Vsin(∅)
100 = Vsin(45)
V = 141.4 km/h
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Solve the equation for y (picture below)<br> Please show work and solve as much as you can
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The number of students in Mrs. Patrick's piano class decreased by 15% in 2 years to 17 students. How many students did she have
guapka [62]

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20 students

Step-by-step explanation:

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x = 17*100/85

x = 1700/85

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6 0
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