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vagabundo [1.1K]
3 years ago
6

Write an equation that represents the line. Use exact numbers

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
7 0
Y=2/3x+2/3 bc slope is 2/3 and 4-2/4-1=2/3
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Can you guys help please im so confused
marissa [1.9K]

Answer:

a) see below

b) 40x20 meters

Step-by-step explanation:

Write down what you know:

- The area of the enclosure is length*width, so

A = x \cdot y

- The length of the fencing is 80 meters, so

2y + x = 80

Now we have to combine these two equations above, and get rid of y in the process.

First rewrite the second as:

y = 40 - \frac12 x

Then substitute for y in the first:

A = x (40 - \frac12 x) = 40x - \frac12x^2

b) To maximize A, find the zero of the first derivative:

A'(x) = 40 - x = 0 \implies x=40

So y = (80-40)/2 = 20 meters.

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2 years ago
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4:10 is the time that the class ends, I think that's what you meant?
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310.11 divided by 2????
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155.055

Step-by-step explanation:

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