Asked by Nadia

a man decides to create a vegetable garden. He buys 100m of wire netting to fence off a rectangular area from the kangaroos. There is already an existing fence on one side of the rectangle, so the 100m of wire netting is for the other 3 sides.If x is the width of the rectangular garden, write an expression for the length of the garden in terms of x.

Answers

Answered by oobleck
It depends on what you are calling the width. Make your diagram...

If w is the width of the garden parallel to the existing fence, then there are two other sides of length y. So,
w+2y = 100
y = (100-w)/2

If w is one of the two sides perpendicular to the fence, then there is only one other side, with length y. So,
2w+y = 100
y = 100-2w
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