A flat rectangular piece of aluminum has a perimeter of 70 inches. The length is 11 inches longer than the width. Find the width. A. 34 inches B. 35 inches C. 23 inches D. 12 inches
ANSWERS
2015-11-02 22:26:12
perimeter = 2L +2wL = w+1170 = 2(w+11) +2w70 = 2w+22+2w70= 4w + 2248 = 4ww=48/4 = 12width = 12length = 12+11 = 232x12 = 242x23 = 4646+24 = 40 length = 23 inches, width = 12 inchesAnswer is D
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