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3 years ago

An equivalent expression for sin x is?(please answer with steps)

Mathematics

1 answer:

Anestetic [448]3 years ago

5 0

Answer:

Step-by-step explanation:

Using the trigonometric identity

sin2x = 2sinxcosx

That is the angle on the right side is half the angle on the left, thus

sinΘ = 2sin( $\frac{1}{2}$ Θ )cos( $\frac{1}{2}$ Θ ) → b

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The poorest person in a country has 50$ and the richest had $9.956. How much less money does the poorest have

Alecsey [184]

What you need to do is subtract since the key word "How much Less money" is in it.

$9.956-$50 = 40.044$

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3 years ago

you use a garden hose to fill a wading pool if the water level rise 12 centimeters every 5 minutes and you record the data point

Shalnov [3]

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2 years ago

Calculate interior angle of a regular 15 sided polygon

AleksAgata [21]

Answer:

156°

Step-by-step explanation:

The sum of the interior angles of a polygon is

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3 years ago

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saw5 [17]

Answer:

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3 years ago

A human resources representative claims that the proportion of employees earning more than $50,000 is less than 40%. To test thi

bearhunter [10]

Answer:

The statistic for this case would be:

$z=\frac{\hat p -p_o}{\sqrt{\frac{\hat p(1-\hat p)}{n}}}$

And replacing we got:

$z= \frac{0.436-0.4}{\sqrt{\frac{0.436*(1-0.436)}{700}}}= 1.92$

Step-by-step explanation:

For this case we have the following info:

$n =700$ represent the sample size

$X= 305$ represent the number of employees that earn more than 50000

$\hat p=\frac{305}{700}= 0.436$

We want to test the following hypothesis:

Nul hyp. $p \leq 0.4$

Alternative hyp : $p>0.4$

The statistic for this case would be:

$z=\frac{\hat p -p_o}{\sqrt{\frac{\hat p(1-\hat p)}{n}}}$

And replacing we got:

$z= \frac{0.436-0.4}{\sqrt{\frac{0.436*(1-0.436)}{700}}}= 1.92$

And the p value would be given by:

$p_v = P(z>1.922)= 0.0274$

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3 years ago

An equivalent expression for sin x is?(please answer with steps)​

An equivalent expression for sin x is?(please answer with steps)