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July 5, 2015

Homework Help: Calculus

Posted by Amy on Sunday, February 5, 2012 at 4:20pm.

A ladder 15 feet long is leaning against a building so that end X is on level ground and end Y is on the wall. Point 0 is where the wall meets the ground. X is moving away from the building at a constant rate of 1/2 foot per second.

(a.) Find the rate in feet per second at which the length of 0Y is changing when X is 9 feet from the building.

(b.) Find the rate of change in square feet per second of the area of triangle X0Y when X is 9 feet from the building


---If you can help answer even part of it, that would be super helpful! Thank you so much :x :x

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