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nignag [31]
3 years ago
15

Please help I don't remember

Mathematics
1 answer:
Scilla [17]3 years ago
6 0
Perpendicular: -4
Parallel: 1/4
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It's always a good idea to check your solutions to any equation in the original equation. When solving an absolute value equatio
Andru [333]

You should must check for an extraneous solution when  the variable appears both inside and outside the absolute value expression

<h3>What is an extraneous solution?</h3>

An extraneous solution is a solution that in obtained after completely solving an equation but it does not  work in the original given equation.

You should must check for an extraneous solution when  the variable appears both inside and outside the absolute value expression (Option D).

Learn more about extraneous solution: brainly.com/question/14054707

#SPJ1

7 0
2 years ago
One person wants to get a 95% z-confidence interval with a margin of error of at most 15 based on a population standard deviatio
Bess [88]

Answer:

n=(\frac{1.96(60)}{15})^2 =61.46 \approx 62  

So the answer for this case would be n=62 rounded up to the nearest integer  

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

\bar X represent the sample mean for the sample  

\mu population mean

\sigma=60 represent the population standard deviation  

n represent the sample size (variable of interest)  

Confidence =95% or 0.95

The margin of error is given by this formula:  

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}} (1)  

And on this case we have that ME =15, and we are interested in order to find the value of n, if we solve n from equation (1) we got:  

n=(\frac{z_{\alpha/2} \sigma}{ME})^2 (2)  

The critical value for 95% of confidence interval is provided, z_{\alpha/2}=1.96, replacing into formula (2) we got:  

n=(\frac{1.96(60)}{15})^2 =61.46 \approx 62  

So the answer for this case would be n=62 rounded up to the nearest integer  

6 0
3 years ago
The distance in inches around a toy flying disc with diameter 10 inches is given by the expression pie times 10. Evaluate this e
boyakko [2]

Answer:

pi*10 = 3.14*10 = 31.4 inches

8 0
3 years ago
Someone help I don't get it
Gemiola [76]
The answer is the first choice. 
6 0
3 years ago
Find the volume of the triangular prism.
Anna35 [415]
First you find the area of the front face 1/2bh or in you case 10x12=120  1/2 of 120 is 60  next you multiply 60 by 20 to get 1,200 for the voulume 
3 0
3 years ago
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