The length of a rectangle is 8 yards less than 3 times the width and the area is 3.5

Question

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Answer 1

w(3w-8) = 3.5

 

3w^2 - 8w - 3.5 = 0

 

30w^2 - 80w - 35 = 0

 

6w^2 - 16w - 7 = 0

 

w = [16 +or- sqrt ( 256 + 4*6*7)]/12

 

(4/3) +or- sqrt(256 + 126)/12

 

(4/3) +or- sqrt( 382)/12

 

(4/3) +or- sqrt( 2*191) / 12