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3 years ago

Real Answers Only!!!!

Mathematics

1 answer:

lyudmila [28]3 years ago

5 0

Answer:

The correct answer is C) Reflection across the Y-axis.

Step-by-step explanation:

This is because only the x-coordinates changed. If these coordinates were reflected across both the x and y axis' the sign of both the x and y coordinates would have changed. When you reflect a point across the x axis, the y-coordinates change their sign. When you reflect a point across the y axis, the x-coordinates change their sign.

Hope this helps,

♥A.W.E.S.W.A.N.♥

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I need help please and thank you

marta [7]

So what u need to do is

46+x=180 and u will get the answer

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3 years ago

Mr. Theorem writes the expressions Six to the second power divided by 2m on the board.what is the value of this expression when

Ulleksa [173]

6, if m=3 then it must be 36/6 which is equal to 6

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3 years ago

Read 2 more answers

A population has a known standard deviation of 1.27 and a sample space contains 85 values find the margin of error needed to cre

r-ruslan [8.4K]

Answer:

The margin of error needed to create a 99% confidence interval estimate of the mean of the population is of 0.3547

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.99}{2} = 0.005$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.005 = 0.995$ , so $z = 2.575$

Now, find the margin of error M as such

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

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

In this question:

$\sigma = 1.27, n = 85$

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

$M = 2.575*\frac{1.27}{\sqrt{85}}$

$M = 0.3547$

The margin of error needed to create a 99% confidence interval estimate of the mean of the population is of 0.3547

7 0

3 years ago

Write all the factors of 9 . Use commas to separate them.rtth

Rasek [7]

Answer:

1, 3, 9

Step-by-step explanation:

the nine can be divided by those three numbers and no more

5 0

2 years ago

Read 2 more answers

Help me do the math and the steps to do or to get to the answer

Hunter-Best [27]

Pink:
10 * 10 = 100

Blue:
10 * 4 = 40

Purple:
9 * 10 = 90

Green:
4 * 9 = 36

Add them all together.
100 + 90 + 40 + 36 = 266

Have an awesome day! :)

5 0

3 years ago