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3 years ago

Which statement illustrates why cosine is an even function?

Mathematics

2 answers:

Basile [38]3 years ago

4 0

Answer:

Step-by-step explanation:

Edge 2020

son4ous [18]3 years ago

3 0

C. cos(-pie/4) = cos(pie/4)

Step-by-step explanation: edge

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Help#3 plus plus plus need this

gayaneshka [121]

Wouldn't it be -54. Because when you subtract 5-59 you get a negative number... IT WOULD BE FREEZING THERE!!! I HOPE THIS HELPED

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4 years ago

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The average weight of the entire batch of the boxes of cereal filled today was 20.5 ounces. A random sample of four boxes was se

zhenek [66]

Answer:

$s= \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And replacing we got:

$s= 0.286$

And then the estimator for the standard error is given by:

$SE= \frac{0.286}{\sqrt{4}}= 0.143$

Step-by-step explanation:

For this case we have the following dataset given:

20.05, 20.56, 20.72, and 20.43

We can assume that the distribution for the sample mean is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

And the standard error for this case would be:

$SE= \frac{\sigma}{\sqrt{n}}$

And we can estimate the deviation with the sample deviation:

$s= \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

And replacing we got:

$s= 0.286$

And then the estimator for the standard error is given by:

$SE= \frac{0.286}{\sqrt{4}}= 0.143$

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3 years ago

Please help answer ASAP

Anarel [89]

8.95 times 1.20 = 10.74

10.74 + 4.31 = $15.05

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3 years ago

I’m gonna need a little help on this

Scrat [10]

Answer:

sorry I don't know just ask to any one

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3 years ago

Help me please I’m dying

slavikrds [6]

X is 90 i think because it shows you the right angle

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3 years ago

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