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 2 years ago
A banner is 4 feet longer than its width the area is 77 square feet. what is the width and length
 2 years ago
A banner is 4 feet longer than its width the area is 77 square feet. what is the width and length

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kirk.freedman
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1354222764363:dw so w(w+4)=77

cdelomas
 2 years ago
Best ResponseYou've already chosen the best response.0soould be the width and length

kirk.freedman
 2 years ago
Best ResponseYou've already chosen the best response.1yes, so do you know how to solve this equation above? that will give you your width

kirk.freedman
 2 years ago
Best ResponseYou've already chosen the best response.1have you learned how to factor?

kirk.freedman
 2 years ago
Best ResponseYou've already chosen the best response.1so you have the equation w(w+4)=77 so the first step would be to do distributive property, so now you have w^2+4w=77

kirk.freedman
 2 years ago
Best ResponseYou've already chosen the best response.1subtract 77 from both sides and your equation is now w^2+4w77=0

kirk.freedman
 2 years ago
Best ResponseYou've already chosen the best response.1Now you must factor it. When I factor it I get (w+11)(w7)=0

kirk.freedman
 2 years ago
Best ResponseYou've already chosen the best response.1Now you test both solutions. w+11=0 and w7=0. When I solve both of those I get w= 7,11. Since you cannot have a negative width, the answer for the width is 7.

kirk.freedman
 2 years ago
Best ResponseYou've already chosen the best response.1Now just from the original picture you do w+4, since you know w now, it is 7+4. So you have the width is 7 and the length is 11.
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