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Dovator [93]
2 years ago
8

You have 68 feet of fencing to enclose a rectangular plot that borders on a river. If you DO NOT fence the side

Mathematics
1 answer:
Vladimir79 [104]2 years ago
3 0

Answer:

168 = L + 2W

And you want to maximize LW.

Which means you want to maximize W (168 - 2W), or 168W - 2W^2.

To maximize that, the derivative must go to zero.

0 = 168 - 4W, or W = 42. And L = 84. Done. :-)

Step-by-step explanation:

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A house with a rectangle base is built on a plot of land. The southwest corner of the plot is designated with coordinates (0,0).
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Answer:

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To find the length B,the points with coordinates (48,41) and (20,20) are used or (5,40) and (33,61)

Using point with coordinates (48,41) and (20,20)

Length,B=√(〖(48-20)〗^2+(〖41-20)〗^2 )=25

with x1=20, y1=20, x2=48, y2=41

Also try using points with coordinates (5,40) and (33,61).You will get same answer(opposite sides of a rectangle are equal)

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