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defon
3 years ago
14

What is the first step in writing f(x) = 6x2 + 5 – 42x in vertex form?

Mathematics
1 answer:
Marina CMI [18]3 years ago
7 0
The first step to getting this in vertex form would be to put this in proper standard form. This is so that you can split the middle term which is a step of completing the square. 
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The profit that a vendor makes per day by selling x elephant ears is given by the function P(x)= -0.004x^2+3.2x-200. Find the nu
dezoksy [38]

Answer:

The number of elephant ears that must be sold to maximize profit is 400.

Step-by-step explanation:

Given that,

The profit that a vendor makes per day is given by

P(x)= - 0.004x² +3.2 x -200

where x is number of elephant ears.

P(x)= - 0.004x² +3.2 x -200

Differentiating with respect to x

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Again differentiating with respect to x

P''(x) = -0.008

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⇒0.008x=3.2

\Rightarrow x=\frac{3.2}{0.008}

⇒ x = 400

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Since at x=400, P''(x)<0, the profit is maximize.

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