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Answer to Question #64112 in Calculus for Mai
Question #64112
14. Two roads intersect at point P at an angle of 120, as shown in the fi gure. Car X is driving
from P towards A, and car Y is driving from P towards B. At a particular time, car X is 10
kilometers from P and traveling at 60 km/hr, while car Y is 12 kilometers from P and traveling
at 80 km/hr. How fast is the distance between the two cars changing?
from P towards A, and car Y is driving from P towards B. At a particular time, car X is 10
kilometers from P and traveling at 60 km/hr, while car Y is 12 kilometers from P and traveling
at 80 km/hr. How fast is the distance between the two cars changing?
Expert's answer
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Comments
Dear Hang, please use the panel for submitting new questions.
At a certain moment, a triangle has base length 10 cm and perpendicular height 8 cm. The length is increasing at a rate of 1 cm/s while the height is decreasing at 1 cm/s. How fast is the area changing? Is the area increasing or decreasing?
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