HELP ASAP EXTRA POINTS <br> -42-6n=-30 solve for n.

Someone help me with this ASAP

Archy [21]

Answer:

1:6

3/5×2=6/10

2:14

21÷3=7

2×7=14

8 0

2 years ago

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What is the answer to 3 = x/12 + 3?

Citrus2011 [14]

The answer is 3.25 hundredths your welcome and thank you for letting me answer your answer bye.

4 0

3 years ago

I need help any help is appreciated please

Eva8 [605]

Answer:

third option both cost the same after 2 months

4 0

3 years ago

Which sixth-grade student lives the farthest from school?<br> Is this a statistical question?

MAVERICK [17]

Answer:

Yes

Step-by-step explanation:

Becuase a statistical question is "one that can be answered by collecting data and where there will be variability in that data" you can collect data to find out

7 0

3 years ago

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Construct the confidence interval for the population mean mu. c = 0.90, x = 16.9, s = 9.0, and n = 45. A 90% confidence inte

Georgia [21]

Answer:

The 90% confidence interval for population mean is $14.7 < \mu < 19.1$

Step-by-step explanation:

From the question we are told that

The sample mean is $\= x = 16.9$

The confidence level is $C = 0.90$

The sample size is $n = 45$

The standard deviation

Now given that the confidence level is 0.90 the level of significance is mathematically evaluated as

$\alpha = 1-0.90$

$\alpha = 0.10$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the standardized normal distribution table. The values is $Z_{\frac{\alpha }{2} } = 1.645$

The reason we are obtaining critical values for $\frac{\alpha }{2}$ instead of that of $\alpha$ is because $\alpha$ represents the area under the normal curve where the confidence level 1 - $\alpha$ (90%) did not cover which include both the left and right tail while $\frac{\alpha }{2}$ is just considering the area of one tail which is what we required calculate the margin of error