1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mr Goodwill [35]
2 years ago
9

Graph the equations x = 5, x= 2 , y=-2, and y=1.

Mathematics
1 answer:
Mashutka [201]2 years ago
3 0

Answer:

Here, hope this helps!

Step-by-step explanation:

You might be interested in
Finding dilations geometry​
cricket20 [7]

Answer:

3, 7

Step-by-step explanation:

6 0
2 years ago
An archaeologist uses an accelerator mass spectrometer to find the age of a buried branch. At the 68\%68%68, percent confidence
Komok [63]

Answer:

B. 10000 years old, with a margin of error of 400 years

Step-by-step explanation:

Assuming this complete problem: "12. An archaeologist uses an accelerator mass spectrometer to find the age of a buried branch. At the 68% confidence level, the spectrometer estimates that the branch was 10,000 years old with a following could the spectrometer estimate as the age of the branch at the 95% confidence level?"

The possible options are:

A. 9500 years old, with a margin of error of 500 years

B. 10000 years old, with a margin of error of 400 years

C. 9500 years olds, with a margin of error of 50 years

D. 10000 years old, with a margin of error of 40 year

Solution to the problem

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 (variable of interest)

s represent the sample standard deviation

n represent the sample size  

The confidence interval for the mean is given by the following formula:

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}   (1)

The margin of error for this case is given by this formula:

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

For the first case the confidence was 68% so then \alpha =1-0.68 =0.32 and \alpha/2 =0.16 we can find a critical value on the normal standard distribution that accumulates 0.16 of the area on each tail and this value is z=\pm 0.994, because P(z<-0.944) = 0.16 and P(Z>.944) = 0.16

The margin of error can be expressed like this:

ME = z_{\alpha/2} SE

We can solve for the standard error on this case and we got:

SE = \frac{ME}{z_{\alpha/2}} =\frac{200}{0.994}=201.207

And then for the new confidence interval we need to calculate the new z_{\alpha}. For the first case the confidence was 95% so then \alpha =1-0.95 =0.05 and \alpha/2 =0.025 we can find a critical value on the normal standard distribution that accumulates 0.025 of the area on each tail and this value is z=\pm 1.96, because P(z<-1.96) = 0.025 and P(Z>1.96) = 0.025. So then the new margin of error would be:

ME = z_{\alpha/2} SE = 1.96*201.207=394.366

The estimation for the mean not changes and from the before and new case is 1000 years. So then the best option for this case would be:

B. 10000 years old, with a margin of error of 400 years

And makes sense since a larger confidence interval means a wider interval.

8 0
3 years ago
Explain how the Quotient of Powers Property was used to simplify this expression.
erastova [34]

Answer:

A- By simplifying 25 to 52 to make both powers base five and subtracting the exponents

Step-by-step explanation:

\dfrac{5^4}{25} = 5^2

Change 25 into 5².

\dfrac{5^4}{5^2} = 5^2

Apply the Quotient of Powers Property. (Subtract the exponents.)

5^{4 - 2} = 5^2

5^{2} = 5^2

Answer: A- By simplifying 25 to 52 to make both powers base five and subtracting the exponents

8 0
2 years ago
Round 354,738 to the nearest thousand?
Alchen [17]
Your answer is 400,000.

Hope this helps!
7 0
3 years ago
Find the GCF of 12x^4y, 16xy^2, and 20y^3
faltersainse [42]

Answer:

12x^4y^ = 2 * 2 * 3 * x^4*y\\\\16xy^2 = 2*2*2*2*x* y^2\\\\20y^3 = 2*2*4*y^3\\\\GCF = 2 * 2 * y=4y

4 0
3 years ago
Other questions:
  • Six classrooms lost electricity this morning for 47 minutes. Determine the percent of an hour that the classrooms were without e
    14·1 answer
  • Help mewa plzzzzzzzz
    7·2 answers
  • Numbers:20 &amp; 21 <br> Please help me!!!!
    6·1 answer
  • Two consecutive even integers whose product is 80
    7·1 answer
  • I have the same value as a group of 2 dimes and 1 nickel. what coin am I?
    9·2 answers
  • 40 tens equal how many hundreds
    12·2 answers
  • Why is measuring a circle different for measuring a polygon
    8·2 answers
  • Find x for me i need help.
    9·1 answer
  • How to change 0.225 into a fraction
    6·1 answer
  • Which of the following systems of inequalities has solutions represented by the graph shown below?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!