Question

A rectangle has an area of 40 square units. The length is 6 units greater than the width.

What are the dimensions of the rectangle?

8 by 5
10 by 4
11 by 9
13 by 7

Answer 1

@ganeshie8 @texaschic101 @triciaal @freckles @Nnesha @Michele_Laino

Answer 2

40 = L*W
L = W+6

Substitute.

40 = (W+6)*W

Answer 3

40 = W^2 + 6W
0 = W^2+6W-40

Answer 4

Then you factor, so
0 = (W-4)(W+10)
So, the width is either |4| or |-10|

That means that the length is either 10 or 4, by plugging it into 40=L*W and solving for L

So 10 x 4

Answer 5

Thanks