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A rectangular parking lot has a length that is 6 yards greater than the width.the area is 160 yards. What's the width

 Mar 26, 2020
 #1
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Area  =  W * L

 

160  =  W ( W + 6)      simplify

 

!60    =  W^2  + 6W     rearrange as

 

W^2  + 6W  - 160  =  0        factor

 

(W  + 16) ( W  - 10)  =  0  

 

Only  the  second factor produces  what we want   W -  10   =   0  ⇒   W   = 10  yards

 

 

cool cool cool

 Mar 26, 2020

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