Algebra and Trigonometry (6th Edition)
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN: 9780134463216
Author: Robert F. Blitzer
Publisher: PEARSON
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By decreasing each dimension by 1 unit, the area of a rect-
angle decreased from 40 square feet (on the left) to 28 square
feet (on the right). Find the percent of decrease in area.
8 ft
7 ft
Area:
Area:
5 ft
4 ft
40 sq ft
28 sq ft
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Transcribed Image Text:By decreasing each dimension by 1 unit, the area of a rect- angle decreased from 40 square feet (on the left) to 28 square feet (on the right). Find the percent of decrease in area. 8 ft 7 ft Area: Area: 5 ft 4 ft 40 sq ft 28 sq ft
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