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March 12, 2014

# Homework Help: Algebra

Posted by Robert on Tuesday, October 23, 2012 at 3:57pm.

12. The length of a rectangle is 9.7 cm more than 4 times the width. If the perimeter of the rectangle is 91.4 cm, what are its dimensions? (2 points)

• Algebra - Ms. Sue, Tuesday, October 23, 2012 at 5:01pm

P = 2L + 2W

91.4 = 2(4W + 9.7) + 2W

91.4 = 8W + 19.4 + 2W

91.4 - 19.4 = 10W

72 = 10W

7.2 = W

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