A 5-foot-tall woman walks at 8 ft/s toward a streetlight that is 20 ft above the ground.

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A 5-foot-tall woman walks at 8 ft/s toward a streetlight that is 20 ft above the ground. What is the rate of change of the length of her shadow when she is 15 ft from the streetlight? At what rate is the tip of her shadow moving?

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Calculus Early Transcendentals

ISBN: 978-0321947345

2nd edition

Authors: William L. Briggs, Lyle Cochran, Bernard Gillett

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Question Posted: Feb 13, 2019 09:31 AM

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A 5-foot-tall woman walks at 8 ft/s toward a streetlight that is 20 ft above the ground.

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By similar triangles so x y 4y so x 3y ...View the full answer

Calculus Early Transcendentals

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