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Orlov [11]
3 years ago
6

What is the measure of the angle?​

Mathematics
2 answers:
maksim [4K]3 years ago
8 0

The angle is a 90 degree angle.

Alinara [238K]3 years ago
3 0

Answer:

80degrees

Step-by-step explanation:

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You do a study of hypnotherapy to determine how effective it is in increasing the number of hours of sleep subjects get each nig
brilliants [131]

Answer:

Confidence interval

8.98-2.2\frac{1.29}{\sqrt{12}}=8.16    

8.98+2.2\frac{1.29}{\sqrt{12}}=9.80  

And the margin of error would be:

ME=2.2\frac{1.29}{\sqrt{12}}=0.819

Step-by-step explanation:

For this case we have the followig dataset:

DATA: 8.2; 9.1; 7.7; 8.6; 6.9; 11.2; 10.1; 9.9; 8.9; 9.2; 7.5; 10.5

We can calculate the mean and the deviation with the following formulas:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

s =\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

And replacing we got:

\bar X= 8.98[/tex[tex]s = 1.29

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

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The degrees of freedom are given by:

df=n-1=12-1=11

The Confidence level is 0.95 or 95%, the value of significance is \alpha=0.05 and \alpha/2 =0.025, and the critical value would be t_{\alpha/2}=2.20

Repplacing the info we got:

8.98-2.2\frac{1.29}{\sqrt{12}}=8.16    

8.98+2.2\frac{1.29}{\sqrt{12}}=9.80    And the margin of error would be:

ME=2.2\frac{1.29}{\sqrt{12}}=0.819

7 0
3 years ago
How do graph an inequality
wel
Http://www.wikihow.com/Graph-Inequalities

3 0
4 years ago
What are the angle names given in the picture?
alisha [4.7K]

Answer:

tbh there are quite a lot of possibilities

I'll just name the properties but not show which angle applies to it cos that's too time consuming

Step-by-step explanation:

vertically opposite angles

interior / exterior alternate angles

corresponding angles

angles on a straight line are supplementary

4 0
3 years ago
Help ill give brainliest and 5 star and thx if u help with all of em and ill give 20 points
choli [55]

Answer:

1. 3mg

2. 3050g

3. 0.025g

4. 5700mg

5. 0.294g

6. 32mg

7. 13700mg

8. 2.441kg

9. 8.24g

10. 0.075kg

11. 430g

12. 0.721g

Step-by-step explanation:

This should be right :)

3 0
3 years ago
Find the rate of interest per annum at which ₹ 5000 will amount to ₹ 6, 050 in 3<br> years.
loris [4]

Answer:

7%

Step-by-step explanation:

Using the formula

Amount = Principal + Interest

Give the following

Principal = ₹ 5000

Amount =₹ 6050

Time = 3 years

Required

Time

Substitute into the formula

A = P + I

A = P + PRT/100

6050 = 5000 + 5000(R)(3)/100

6050 - 5000 = 150R

1050 = 150R

R = 1050/150

R = 7

Hence the rate of interest is 7%

6 0
3 years ago
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