cher7 cher7
  • 25-06-2014
  • Mathematics
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the area of the rectangle is 85 cm. express the perimeter of the rectangle is function of the width x.

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Lilith
Lilith Lilith
  • 25-06-2014
[tex]the \ width : \ x \\ the \ length : \ y \\ The area : \ A=85 \\ \\A=xy \\ \\85=xy\\ \\y= \frac{85}{x}[/tex]


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vaibhavay
vaibhavay vaibhavay
  • 25-06-2014
f(x)=85-2(y)  I think it is so .
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