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Luden [163]
3 years ago
13

I was wondering if you can help me with math problem​

Mathematics
1 answer:
oee [108]3 years ago
7 0

Answer:

what is you math promblem.I think you are new to this app but if you want help with your homework you press the  button that say ask a question and then u pick a subject and post it so other people could help you.But I can't help becuase you did not say what you need help on or your question

Step-by-step explanation:

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What is the best estimate for the value of the expression?
harkovskaia [24]

Answer: 8 is the anwser

Step-by-step explanation:

7 0
3 years ago
A sociologist develops a test to measure attitudes towards public transportation, and 27 randomly selected subjects are given th
taurus [48]

Answer:

The margin of error for the 95% confidence interval for the mean score of all such subjects is of 8.45.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 27 - 1 = 26

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 26 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.0518

The margin of error is:

M = T\frac{s}{\sqrt{n}}

In which s is the standard deviation of the sample and n is the size of the sample.

In this question:

n = 27, s = 21.4. So

M = 2.0518\frac{21.4}{\sqrt{27}}

M = 8.45

The margin of error for the 95% confidence interval for the mean score of all such subjects is of 8.45.

5 0
3 years ago
What is the slope of the line that goes through the points (12,-18) (-15,-18)
AnnZ [28]

Hi!

Step-by-step explanation:

SLOPE=\frac{Y_2-Y_1}{X_2-X_1}=\frac{RISE}{RUN}

\frac{(-18)-(-18)}{(-15)-12}=\frac{0}{-27}=0

<u><em>Slope is 0.</em></u>

<u><em>The answer is 0.</em></u>

Hope this helps!

Have a nice day! :)

:D

-Charlie

Thank you!

4 0
2 years ago
83 + what = 180 :3 ^-^
Mazyrski [523]
97 is the answer to your question
5 0
3 years ago
Read 2 more answers
If you reflect (–2, –8) across both axes, which quadrant will it be in? Justify your reasoning.
stepan [7]
The quadrant would be the first one, because once reflected over the y-axis, it would become (2,-8), and once reflected over the x-axis, it would become (2,8)
8 0
3 years ago
Read 2 more answers
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