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  • 04-07-2018
  • Mathematics
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Bailey's rectangular dog pen for his Irish Setter must have an area of 400 square feet. Also, the length must be 20 feet longer than the width. Find the dimensions of the pen.

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  • 04-07-2018
Hello.


400=(x+20)x is the equation or 400=x^2+20x 


(x+10)=square root of 500 


so x+10=10 radical 5 



final answer -10 + or - 10 radical 5=x 


Have a nice day
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