A ladder 25 feet long is leaning against a wall of a house. The base of the ladder is pulled away from the wall at the rate of 2 ft/s. How fast is the top of the ladder moving down when its base is 7 feet from the wall? A. 5/12 ft/s C. 7/13 ft/s B. 5/13 ft/s D. 7/12 ft/s

A ladder 25 feet long is leaning against a wall of a house. The base of the ladder is pulled away from the wall at the rate of 2 ft/s. How fast is the top of the ladder moving down when its base is 7 feet from the wall? A. 5/12 ft/s C. 7/13 ft/s B. 5/13 ft/s D. 7/12 ft/s

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

Chapter2: Working With Real Numbers

Section2.3: Rules For Addition

Problem 14P

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Question

A ladder 25 feet long is leaning against a wall of a house. The base of the ladder is pulled away from the
wall at the rate of 2 ft/s. How fast is the top of the ladder moving down when its base is 7 feet from the
wall?
A. 5/12 ft/s
C. 7/13 ft/s
B. 5/13 ft/s
D. 7/12 ft/s

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