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zloy xaker [14]
3 years ago
5

I need help sorry for bothering everyone.

Mathematics
2 answers:
evablogger [386]3 years ago
6 0

Step-by-step explanation:

We know that:

  • m\parallel n
  • m\angle2=60\°
  • m\angle1=m\angle3;m\angle2=m\angle4;m\angle5=m\angle7;m\angle6=m\angle8.; because they are opposite angles.
  • Also, m\angle3=m\angle5; because they are alternate interior angles.
  • We can see that m\angle1+m\angle2=180; because they are supplementary angles and they are on a straight angle.

So, based on those deductions:

m\angle1+m\angle2=180\\m\angle1+60=180\\m\angle1=180-60\\m\angle1=120

Then,

m\angle1=m\angle3\\m\angle3=120=m\angle5=m\angle7

All these angles are the same, because they are opposite (1 and 3), alternate interior (5 and 5), and opposite (5 and 7).

Therefore, m\angle7=120\°

Paladinen [302]3 years ago
3 0

Answer:

Look at the picture down below :)))

Step-by-step explanation:

I just took the test and I got the correct answers, hope this helps!

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Nina [5.8K]

Answer:

ok i will do so

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
The first eight quizzes in this class had average scores of 8,9,9,8,8,9,8,7. This gives a sample mean of 8.25 and a sample stand
alexira [117]

Answer:

<em>Test statistic </em>

<em>               </em>t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }  

            t = <em>1.076</em>

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given Mean of the Population (μ) = 8.0

<em>Mean of the sample (x⁻) = 8.25</em>

Given data

                  8,9,9,8,8,9,8,7

Given sample size  n= 8

Given sample standard deviation(S) = 0.661

<u><em>Step(ii):-</em></u>

<em>Null hypothesis : H:  (μ) = 8.0</em>

<em>Alternative Hypothesis :H:(μ) > 8.0</em>

<em>Degrees of freedom = n-1 = 8-1=7</em>

<em>Test statistic </em>

<em>               </em>t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }<em></em>

<em>              </em>t = \frac{8.25 -8.0}{\frac{0.661}{\sqrt{8} } }<em></em>

<em>            t =  1.076</em>

<em>Critical value </em>

<em>                    t₍₇,₀.₀₅₎   = 2.3646</em>

<em>The calculated value   t =  1.076 < 2.3646 at 0.05 level of significance</em>

<em>Null hypothesis is accepted</em>

<em>Test the hypothesis that the true mean quiz score is 8.0 against the alternative that it is not greater than 8.0</em>

<em></em>

3 0
3 years ago
a perfect score on a test with 25 questions is 100 each question is worth the same number of points how many points is each ques
user100 [1]
4 because 100 divided by 25 is 4.
6 0
3 years ago
Read 2 more answers
Florida state university has 14 statistics classes scheduled for its summer 2013 term. one class has space available for 30 stud
bonufazy [111]
Hi <span>Bladen8960
So the only numbers that matter are the classes. So let's write it out 30, 60, 60, 60, 60, 60, 60, 60, 60, 70, 100, 100, 100, 100. OK so average is mean so to find mean we add all the classes then divide by how many their are so, adding them all together we get 880 students can go into each classroom so now we divide that by 14 how many classes their are which gives us about 62.
If I'm wrong I'm sorry but I hope this helps!</span>
3 0
4 years ago
What is the slope of a line perpendicular to the line with a slope of 1/2
frosja888 [35]

Answer:

-2

Step-by-step explanation:

To answer this, just take the negative reciprocal of 1/2.  We obtain -2.

7 0
3 years ago
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