A girl 5 feet tall walks toward a street light 20 feet high at a rate of

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A girl 5 feet tall walks toward a street light 20 feet high at a rate of 4 feet per second. Her little brother, 3 feet tall, follows at a constant distance of 4 feet directly behind her (Figure 14).

Determine how fast the tip of the shadow is moving, that is determine dy/dt.

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Calculus

ISBN: 978-0131429246

9th edition

Authors: Dale Varberg, Edwin J. Purcell, Steven E. Rigdon

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Question Posted: Jun 21, 2016 09:51 AM

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A girl 5 feet tall walks toward a street light 20 feet high at a rate of

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20 1 .

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Let l be the distance along the ground from the brother to the tip of th...View the full answer

Calculus

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