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
kaheart [24]
3 years ago
9

Help please. I don’t understand this topic

Mathematics
1 answer:
wolverine [178]3 years ago
5 0
The second option is your answer. 

I can tell because any number to the power of 0 is equal to 1. So 2⁰ = 1.

The only one with a first term of 1 is the second option. 
You might be interested in
HELP!! REAL answers only please.
Alika [10]

Answer:

33

Step-by-step explanation:

So the angle of 40 is a vertical angle with the one opposite of it, meaning that the triangle on the left would have two values of 40 and 41, to find the value of the 3rd angle of the left triangle, you can subtract 40 and 41 from 180 which is the total number of degrees in a triangle to get 99, then you can find the degrees of the triangle on the right's bottom angle by subtracting 99 from 180, meaning the bottom left angle would be 81, then you can do the same to find the other angle by subtracting 114 from 180 to get 66. Lastly you can add 81 and 66 to get 147, then subtracting 147 from 180 you would get x=33

3 0
3 years ago
Three math questions
OlgaM077 [116]

Answer:

1. A is d=1.75

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
7is subtracted from the quotient of 48 divided by th<br>e sum of 5 &amp; difference of 11 and 8​
kramer

Answer:

7-48=41

÷

5+11-8

bodmas

5+3=8

41÷8=5.125

5 0
3 years ago
Read 2 more answers
The standard deviation of math test scores at one high school is 16.1. A teacher claims that the standard deviation of the girls
Elanso [62]

Answer:

\chi^2 =\frac{22-1}{259.21} 166.41 =13.482

p_v =P(\chi^2

In order to find the p value we can use the following code in excel:

"=CHISQ.DIST(13.482,21,TRUE)"

If we compare the p value and the significance level provided we see that p_v >\alpha so on this case we have enough evidence in order to FAIL reject the null hypothesis at the significance level provided. And that means that the population deviation is not significantly lower than 16.1 at 1% of significance.

Step-by-step explanation:

Notation and previous concepts

A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"

n=22 represent the sample size

\alpha=0.01 represent the confidence level  

s^2 =12.9^2=166.41 represent the sample variance obtained

\sigma^2_0 =16.1^2 =259.21 represent the value that we want to test

Null and alternative hypothesis

On this case we want to check if the population deviation is smaller than 16.1 (that's equivalent to check if the population variance is lower than 259.21:

Null Hypothesis: \sigma^2 \geq 259.21

Alternative hypothesis: \sigma^2

Calculate the statistic  

For this test we can use the following statistic:

\chi^2 =\frac{n-1}{\sigma^2_0} s^2

And this statistic is distributed chi square with n-1 degrees of freedom. We have eveything to replace.

\chi^2 =\frac{22-1}{259.21} 166.41 =13.482

Calculate the p value

In order to calculate the p value we need to have in count the degrees of freedom , on this case 21. And since is a left tailed test the p value would be given by:

p_v =P(\chi^2

In order to find the p value we can use the following code in excel:

"=CHISQ.DIST(13.482,21,TRUE)"

Conclusion

If we compare the p value and the significance level provided we see that p_v >\alpha so on this case we have enough evidence in order to FAIL reject the null hypothesis at the significance level provided. And that means that the population deviation is not significantly lower than 16.1 at 1% of significance.

3 0
3 years ago
Maya has read two less than four times
SashulF [63]

Answer:

2(2n - 1)  

Step-by-step explanation:

         Let x = the number of books Theo has read

   Then 4x = four times the number of books Theo has read.

And 4n - 2 = 2 less than four times the number of books Theo has read

 But 4n -2 = the number of books Maya has read

Factor the expression

4n - 2 = 2(2n - 1)

The factored expression is 2(2n - 1).

3 0
3 years ago
Other questions:
  • What number do 64 and 100 have in common
    12·2 answers
  • An athletics coach states that the distribution of player run times (in seconds) for a 100-meter dash is normally distributed wi
    14·2 answers
  • How do u write 92,542  in expanded form
    8·2 answers
  • Find the x-intercept of the parabola with vertex (-3,16 and y-intercept (0,-20
    14·1 answer
  • Show all your work?<br><br><br>and lease help me out ASAP​
    5·1 answer
  • Someone help, geometry is so hard
    5·1 answer
  • What is the best first step in solving -4x+ 10?
    5·1 answer
  • How do I do this??????? 2/3x-(1/2x+1)<br>btw need it simplified
    10·1 answer
  • Find the measure of the missing angle.<br> a<br> 66°
    8·1 answer
  • What is the value of 8b - 3c when b = 3 and c = 4? ​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!