Respuesta :


width(w)= 2x
length(l)= 5x
Perimeter= 2l+2w= 100(divide each side of the equation by 2)
P= l+w=50
5x+2x= 50
7x=50
x≈7.14

length= 5x= 5(7.14)≈ 35.71

Answer:
The length of this rectangle is about 35.71 units long.