3 years ago

A copy machine can print 480 copies every 4 minutes.

1 answer:

vazorg [7]3 years ago

4 0

480/4 = 120 copies per minute
120 * 10 = 1,200 copies

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Burka [1]

Answer: $f'(1)=\dfrac{4}{2y+1}$

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To find the tangent, you need to find the derivative with respect to x.

Then substitute x = 1 into the derivative.

Given: 0 = 2x² - xy - y²

Derivative: 0 = 4x - y' - 2yy'

Solve for y': 2yy' + y' = 4x

y'(2y + 1) = 4x

$y'=\dfrac{4x}{2y+1}$

$\text{Substitute x = 1:}\quad y'(1)=\dfrac{4}{2y+1}$

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