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Archy [21]
3 years ago
10

When x hundred pairs of skates are produce by c(x) =0.1x2-0.3x+0.625 when c(x) is hundreds of dollars what is the cost and how m

any should be produce to achieve the minimum
Mathematics
1 answer:
sergeinik [125]3 years ago
6 0
0.1x * 2 - 0.3x + 0.625 = 0
0.2x - 0.3x + 0.625 = 0
-0.1x + 0.625 = 0
0.1x = 0.625
x = 6.25
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Answer:

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Solving for cos^2 x we got cos^2 x =1 -sin^2 x and replacing this we got:

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And then the best option for this case would be:

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Step-by-step explanation:

For this case we have the following expression given:

cos x cot x + sin x

We know from math properties that the definition for cot is cot x = \frac{cos x}{sin x}

If we use this definition we got:

cos x \frac{cos x}{sin x} + sin x

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Now we can use the following identity:

sin^2 x + cos^2 x =1

Solving for cos^2 x we got cos^2 x =1 -sin^2 x and replacing this we got:

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And then the best option for this case would be:

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