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2 years ago

How to solve expression using exponents

Mathematics

2 answers:

Vlada [557]2 years ago

4 0

All you have to do is put that exactly on the calculator or download an app called photo math and scan the problem and it gives you the correct answer

Rashid [163]2 years ago

4 0

(-5)^4. Hope it Helps

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Write 19/25 as a terminating decimal

mariarad [96]

Terminating decimals firstly are decimals that finish...
To transfer 19/25 to a decimal we have to get it out of 100.
To do this, multiply 19 by 4, and 25 by 4.
This gives you 76/100.
From here you can easily see the decimal is 0.76.

= 0.76

8 0

3 years ago

How large a sample should be selected to provide a 95% confidence interval with a margin of error of 6? Assume that the populati

marshall27 [118]

Using the z-distribution, it is found that a sample of 171 should be selected.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

$M = z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

For this problem, the parameters are:

$z = 1.96, \sigma = 40, M = 6$

Hence we solve for n to find the needed sample size.

$M = z\frac{\sigma}{\sqrt{n}}$

$6 = 1.96\frac{40}{\sqrt{n}}$

$6\sqrt{n} = 40 \times 1.96$

$\sqrt{n} = \frac{40 \times 1.96}{6}$

$(\sqrt{n})^2 = \left(\frac{40 \times 1.96}{6}\right)^2$

n = 170.7.

Rounding up, a sample of 171 should be selected.

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

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1 year ago

18. A rectangular tables has a

Sauron [17]

Area = 7x + 3
Perimeter = 14x + 6

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1 year ago

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Yoki is running a 10-mile race. She runs at a steady speed and then slows down, stops to get a drink of water, and

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Do you have any pictures to choose from anything to show what im looking at?

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3 years ago

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What is the rate of change

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The average rate of change between two input values is the total change of the function values (output values) divided by the change in the input values.

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2 years ago

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