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3 years ago

Ive been stuck on this expression for a while now

Mathematics

1 answer:

natka813 [3]3 years ago

4 0

Answer:

xy^(2)z^(6)

Step-by-step explanation:

i hope that helps you :)

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I will mark brainliest

valkas [14]

Answer:

f(x)= sin(x) on E2020 the graph with 2 curves (~)

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2 years ago

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You are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on con

AlladinOne [14]

Using the z-distribution, a sample size of 180 is needed for the estimate.

<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 given by:

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

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.

In this problem, we have a 98% confidence level, hence $\alpha = 0.98$ , z is the value of Z that has a p-value of $\frac{1+0.98}{2} = 0.99$ , so the critical value is z = 2.327.

The population standard deviation is of $\sigma = 23$ , and to find the sample size, we have to solve for n when M = 4.

Hence:

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

$4 = 2.327\frac{23}{\sqrt{n}}$

$4\sqrt{n} = 2.327 \times 23$

$\sqrt{n} = \frac{2.327 \times 23}{4}$

$(\sqrt{n}) = \left(\frac{2.327 \times 23}{4}\right)^2$

n = 179.03.

Rounding up, as a sample size of 179 would result in an error slightly above 4, a sample of 180 is needed.

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

#SPJ1

8 0

1 year ago

If + 3 = 27 − 3 = 9,ℎ = ?<br> A. 3<br> B. 9<br> C. 14<br> D. 18<br> E. 36

tekilochka [14]

D you have to substitute the h with 27

Hope this helps

7 0

2 years ago

Elijah buys a jersey that costs $56.00. His bank account balance is now -$6.50. Which math sentence describes how much he owes?

soldier1979 [14.2K]

It would be (B) > $6.00 since he owes $6.50, which is a larger value than $6.00.

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3 years ago

Read 2 more answers

Can someone help please

Phoenix [80]

9514 1404 393

Answer:

16x +8h

Step-by-step explanation:

Use the given function arguments and simplify.

$\dfrac{f(x+h)-f(x)}{h}=\dfrac{8(x+h)^2-8x^2}{h}=\dfrac{8(x^2+2hx+h^2)-8x^2}{h}\\\\=\dfrac{8x^2 +16xh+8h^2-8x^2}{h}=\dfrac{16xh+8h^2}{h}=\boxed{16x +8h}$

7 0

2 years ago