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3 years ago

Can someone please help me solve 3 and 4!? Im stuck. Their short too(:

Mathematics

1 answer:

stepan [7]3 years ago

8 0

What r u takeing i have not did this in a while tbh

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F(2)=<br> Please please help me

Whitepunk [10]

Answer:

F(2)=-2

Step-by-step explanation:

Y=F(2) AS SEEN IN GRAPH Y=-2

3 0

3 years ago

Read 2 more answers

How is the solution

navik [9.2K]

Answer:

wdym what solution put the equation down so I can answer it 4 u

4 0

3 years ago

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Calculate 6 P 6 note n p r equals n Over N - r

Murrr4er [49]

Answer:

Step-by-step explanation:

n! Might be 7, and n might be 6. r might also be 6. So 6 - 6= 0! = 1

So I think it might be 7 ÷ 1, which is 7.

7 0

3 years ago

It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken to estimate

Hitman42 [59]

Answer:

The minimum sample size is n = 75 so that the desired margin of error is 5 or less.

Step-by-step explanation:

We are given the following in the question:

Population variance = 484

Standard deviation =

$\sigma^2 = 484\\\sigma =\sqrt{484} = 22$

Confidence level = 0.95

Significance level = 0.05

Margin of error = 5

Formula:

Margin of error =

$E = z\times \dfrac{\sigma}{\sqrt{n}}\\\\n = (\dfrac{z\times \sigma}{E})^2$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get

$E\leq 5\\\\1.96\times \dfrac{22}{\sqrt{n}} \leq 5\\\\\sqrt{n} \geq 1.96\times \dfrac{22}{5}\\\\n \geq (1.96\times \dfrac{22}{5})^2\\\\n \geq 74.373$

Thus, the minimum sample size is n = 75 so that the desired margin of error is 5 or less.

3 0

3 years ago

Write ln(x^3y^2) in terms of u and v (picture provided)

Katena32 [7]

Remember the properties of logarithms. If you have ln81, you can pull out the power of two (9^2) and have 2ln9. Also, you could do ln9 + ln9 because 9*9=81 and ln9*9 = ln9 + ln9

With these properties, you can get 3lnx+2lny, which is 3u+2v according to the answer.

Hope I helped!

6 0

3 years ago