Answer:
L=10 W=7
Step-by-step explanation:
Rectangle
area of a rectangle:
A = L x W
given
L = W+3
A = 70 square yards
substitute
70 = (W + 3)W
70 = W^2+3W
0 = W^2+3W-70
Factor
(w+10)(w-7)
w= -10,+7
since in real life situations we dont use negative numbers we will disregard -10
W=7
L=W+3
L=7+3
L=10
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Answer:
L=10 W=7
Step-by-step explanation:
Rectangle
area of a rectangle:
A = L x W
given
L = W+3
A = 70 square yards
substitute
70 = (W + 3)W
70 = W^2+3W
0 = W^2+3W-70
Factor
(w+10)(w-7)
w= -10,+7
since in real life situations we dont use negative numbers we will disregard -10
W=7
L=W+3
L=7+3
L=10