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July 30, 2014

Homework Help: Calculus

Posted by Nick on Sunday, January 30, 2011 at 5:30pm.

A ladder 41 feet long that was leaning against a vertical wall begins to slip. Its top slides down the wall while its bottom moves along the level ground at a constant speed of 4 feet per second. How fast is the top of the ladder moving when its 9 ft above the ground?

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