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2 years ago

Simplify the expression -|-5 x (-7)|

Mathematics

1 answer:

Andrei [34K]2 years ago

7 0

Answer:

the simplified expression would be 35

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Thanks for all the help how can i repay?

scoundrel [369]

Answer:

All work and answers are in the picture

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3 years ago

A 90% confidence interval for the mean height of students

Westkost [7]

Answer:

$ME= \frac{69.397-60.128}{2}= 4.6345 \approx 4.635$

And the best answer on this case would be:

b) m = 4.635

Step-by-step explanation:

Let X the random variable of interest and we know that the confidence interval for the population mean $\mu$ is given by this formula:

$\bar X \pm t_{\alpha/2} \frac{s}{\sqrt{n}}$

The confidence level on this case is 0.9 and the significance $\alpha=1-0.9=0.1$

The confidence interval calculated on this case is $60.128 \leq \mu \leq 69.397$

The margin of error for this confidence interval is given by:

$ME =t_{\alpha/2} \frac{s}{\sqrt{n}}$

Since the confidence interval is symmetrical we can estimate the margin of error with the following formula:

$ME = \frac{Upper -Lower}{2}$

Where Upper and Lower represent the bounds for the confidence interval calculated and replacing we got:

$ME= \frac{69.397-60.128}{2}= 4.6345 \approx 4.635$

And the best answer on this case would be:

b) m = 4.635

4 0

2 years ago

Thanks if u help ✨:)

faltersainse [42]

Answer:

D.mode

Step-by-step explanation:

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2 years ago

Which is a factor of each term of the polynomial?<br><br> (3d2 – 10d)

nydimaria [60]

Answer:

d(3d-10)

Step-by-step explanation:

You pull out the common factor of d from both terms, and group the remaining terms inside a parenthesis.

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2 years ago

What is ac? HELP PLSSS

elena55 [62]

What is the context for the question if there is any?

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2 years ago

Read 2 more answers