Patrick B. answered 12/03/18
Math and computer tutor/teacher
99 = w(2w+7)
99 = 2w^2 + 7w
0 = 2w^2 + 7w - 99
0 = ( 2w - 11)(w + 9 )
2w-11 = 0 ---> w = 11/2
w+9=0 results in negative measures
Length is 2(11/2)+ 7 = 18
Area is 18 * 11/2 = 9 * 11 = 99
Julie R.
asked 12/03/18The area of a rectangle is 99yd and the length of the rectangle is 7yd more than twice the width. Find the dimensions of the rectangle.
Patrick B. answered 12/03/18
Math and computer tutor/teacher
99 = w(2w+7)
99 = 2w^2 + 7w
0 = 2w^2 + 7w - 99
0 = ( 2w - 11)(w + 9 )
2w-11 = 0 ---> w = 11/2
w+9=0 results in negative measures
Length is 2(11/2)+ 7 = 18
Area is 18 * 11/2 = 9 * 11 = 99
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