A 20-ft ladder is leaning against a wall. If the bottom is pulled away from the wall at a rate of 6 ft/sec, at what rate is the top of the ladder sliding down the wall when the bottom is 16 ft from the wall?

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter12: Quadratic Functions
Section12.8: Joint And Combined Variation
Problem 3E
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A 20-ft ladder is leaning against a wall. If the bottom is pulled away from the wall at a rate of 6 ft/sec, at what rate is the top of the ladder sliding down the wall when the bottom is 16 ft from the wall?

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