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gladu [14]
2 years ago
9

Kevin earns $6.75 an hour. At this rate how much does he earn in40 hours?

Mathematics
1 answer:
Elenna [48]2 years ago
3 0

Answer:

$270

Step-by-step explanation:

Simply take the per hour rate and multiply it by the number of hours.

6.75 X 40 = 270

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densk [106]

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1 ) sin 165°

2 ) cos 330°

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Step-by-step explanation:

1 )

Given expression is  \sqrt{\frac{1-cos330}{2} }

We know that cos2x=1-2sinx^{2}

sinx^{2}=\frac{1-cos2x}{2}

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GIven expression is  1-2sin^2165

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So the result is cos 330°

3 )

Given expression is \frac{1-cos 315}{sin315}

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Also we know that sin2x = 2sinxcosx

So The numerator becomes 2sin^2x/2. and the denominator becomes as 2sinx/2cosx/2

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So the result is Tan 157.5°

4 )

Given expression is \frac{1-cos 315}{2}

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So the result is sin^2 157.5

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3 years ago
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