Help me with #4 pleasedeeee

Mathematics

1 answer:

Romashka [77]3 years ago

4 0

Answer:

$\dfrac{dy}{dx}=-\dfrac{2x-y-1}{2y-x-1}$

Step-by-step explanation:

Differentiating, you get ...

... x·dy +y·dx +dx +dy = 2x·dx +2y·dy

Collecting terms gives ...

... dy(x +1 -2y) = dx(2x -y -1)

... dy/dx = -(2x -y -1)/(2y -x -1)

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A park is 4 times as it is wide. If the distance around the park is 12.5 kilometers what is the area of the park

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Step-by-step explanation:

Here is the correct question: A park is 4 times as long as it is wide. If the distance around the park is 12.5 kilometers, what is the area of the park?

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