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
julsineya [31]
3 years ago
5

Someone please help! Thank you

Mathematics
2 answers:
Ivenika [448]3 years ago
4 0

Answer:

Hey there!

We can write a equations here:

3x+y=180

Also, since all of the angles have 3x on the outside, then y must be constant.

3y=180

y=60

Thus, for x, we have 3x+60=180, 3x=120, x=40.

2x+6y

2(40)+6(60)

80+360

440.

Let me know if this helps :)

borishaifa [10]3 years ago
3 0
I think the answer would be D, but I’m not sure.
You might be interested in
What is the slope of the line?
Valentin [98]

Answer:

The slope is three

Step-by-step explanation:

count up from the bottom point until you reach -1 then go over one and you will get 3/1.

3 0
3 years ago
Read 2 more answers
Information about the proportion of a sample that agrees with a certain statement is given below. Use StatKey or other technolog
lara31 [8.8K]

Answer:

SE=\sqrt{\frac{\hat p (1-\hat p)}{n}}=\sqrt{\frac{0.35 (1-0.35)}{100}}=0.048

If we replace the values obtained we got:

0.35 - 1.96\sqrt{\frac{0.35(1-0.35)}{100}}=0.257

0.42 + 1.96\sqrt{\frac{0.42(1-0.42)}{150}}=0.443

The 95% confidence interval would be given by (0.257;0.443)

Step-by-step explanation:

Notation and definitions

X=35 number of people that agree.

n=100 random sample taken

\hat p=\frac{35}{100}=0.35 estimated proportion of people that agree

p true population proportion of peopl that agree

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".  

The population proportion have the following distribution

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

Solution to the problem

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025. And the critical value would be given by:

z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96

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

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

The standard error is given by:

SE=\sqrt{\frac{\hat p (1-\hat p)}{n}}=\sqrt{\frac{0.35 (1-0.35)}{100}}=0.048

If we replace the values obtained we got:

0.35 - 1.96\sqrt{\frac{0.35(1-0.35)}{100}}=0.257

0.42 + 1.96\sqrt{\frac{0.42(1-0.42)}{150}}=0.443

The 95% confidence interval would be given by (0.257;0.443)

6 0
3 years ago
Read 2 more answers
After a special medicine is introduced into a petri dish full of bacteria, the number of bacteria remaining in the dish decrease
Digiron [165]

Answer:

the answer is 5.5

5 0
3 years ago
Read 2 more answers
The number of vertices in a prism is twice the number of vertices of one of the bases. How many vertices does one of the bases o
Ira Lisetskai [31]
The answer is 12 vertices. 
3 0
3 years ago
Read 2 more answers
Please find the vertex to this quadratic
Fudgin [204]
Is = 2 ………………………………..,…..
3 0
3 years ago
Other questions:
  • the states C&D spend a total of 55.6 million dollars for tourism the state C spends 3.2 million dollars more than State D fi
    7·1 answer
  • What is the interquartile range of the data? <br><br> 53, 47, 60, 45, 62, 59, 65, 50, 56, 48
    5·1 answer
  • 1) Fill the two pools below with water.
    7·2 answers
  • A necklace is bought for $34 and sold for $38.25. show that the percentage profit is 12.5%
    14·1 answer
  • What is the slop for (2,5) and (4,8)
    5·2 answers
  • Please help marking like brainlist
    12·2 answers
  • In the figure, TS = 8, SR = 4, and QR = 2, what is the length of PQ?
    11·1 answer
  • Which of the following rational functions is graphed below?
    6·1 answer
  • 525, 650, 539, 643, 764, 539, 687<br> What is the interquartile range of these numbers
    7·1 answer
  • I need help plsssssss
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!