
Elementary Geometry For College Students, 7e
7th Edition
ISBN: 9781337614085
Author: Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher: Cengage,
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The top of a ladder 30 meters long leans against a vertical wall, and the lower end rests on a level pavement. If the foot is pulled away at a speed equal to twice its distance from the wall, find how fast the top is sliding downwards at the instant when the lower end is 10 meters away from the wall
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