The length of the rectangle is increasing at a rate of 5 cm per second, and its width is decreasing at a rate of ... 3 cm per second. When the length is 4 cm and the width is 5 cm, how fast is the area of the rctangle changing at that instant? A) decreasing by 10 cm sq. per sec B) decreasing by 5 cm sq. per sec C) increasing by 4 cm sq. per sec D) increasing by 13 cm sq. per sec

The length of the rectangle is increasing at a rate of 5 cm per second, and its width is decreasing at a rate of ... 3 cm per second. When the length is 4 cm and the width is 5 cm, how fast is the area of the rctangle changing at that instant? A) decreasing by 10 cm sq. per sec B) decreasing by 5 cm sq. per sec C) increasing by 4 cm sq. per sec D) increasing by 13 cm sq. per sec

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter3: Polynomial Functions

Section3.5: Mathematical Modeling And Variation

Problem 7ECP: The kinetic energy E of an object varies jointly with the object’s mass m and the square of the...

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