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Lady_Fox [76]
2 years ago
7

Please help!

Mathematics
2 answers:
kondaur [170]2 years ago
5 0
The perimeter in this case will be:

p=2x+y  and we are told that p=84yd so

2x+y=84

y=84-2x

Now for the area:

A=xy, and using y found above in this gives you:

A=x(84-2x)

A=84x-2x^2  now taking the derivatives gives you the velocity and acceleration of the area function...

dA/dx=84-4x and d2A/dx2=-4

Since the acceleration is a constant -4, when velocity is equal to zero it is at the absolute maximum value for the area function...

dA/dx=0 only when 84=4x, x=21

So the maximum possible area will occur when x=21

A(21)=84(21)-2(21^2)

A(21)=882 yd^2  
musickatia [10]2 years ago
4 0

Answer:

882 yd^2

Step-by-step explanation:


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Step-by-step explanation:

There are initially 24 + 15 + 8 = 47 pencils in the bag.

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