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3 years ago

What is the degree of the missing angle?

Mathematics

1 answer:

Gre4nikov [31]3 years ago

3 0

Answer
180°-(49+90+x)
x=180°- 139
X=41°
Step-by-step explanation

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SOMEBODY PLEASE HELP

Salsk061 [2.6K]

Answer:

$7562.50

Step-by-step explanation:

7 0

3 years ago

Solve 4(x + 1) = 4x + 4 A- No solution B- 0 C- All real numbers D- 1

Tcecarenko [31]

The answer is: c- all real numbers

8 0

3 years ago

Can someone help with this question? thanks

Licemer1 [7]

Answer:

Regular: C & E

Irregular: A & B

Not a polygon: F & D

Step-by-step explanation:

A polygon is a close sided shape with no curves. Since F and D have curves they are not polygons. Regular polygons have side lengths which are all equal to each other. C and E are regular polygons. Irregular polygons are polygons whose sides have different values from each other. A and B are irregular.

7 0

3 years ago

A personnel director in a particular state claims that the mean annual income is the same in one of the state's counties (Coun

Shalnov [3]

Answer:

a) The hypothesis that the mean annual income is the same could not be rejected. There is no enough evidence to claim they are different.

b) The critical values for this two-sided test are t=±1.711.

Step-by-step explanation:

The question is incomplete:

(a) Identify the claim and state H0 and Ha.

Which is the correct claim below?

(b) Find the critical value(s) and identify the rejection region(s).

Enter the critical value(s) below.

We have an hypothesis test on the difference of two means.

The null and alternative hypothesis are:

$H_0: \mu_a-\mu_b=0\\\\H_a: \mu_a-\mu_b\neq 0$

The claim of the alternative hypothesis is that the mean annual income is different in County A and County B.

The null hypothesis is that the mean annual income is equal in both counties.

The significance level is α=0.10.

The sample from County A has a mean of S40,400, a s.d. of $8,700 and a sample size of 18 residents.

The sample from County B has a mean of S39,200, a s.d. of $6,000 and a sample size of 8 residents.

The standard error of the difference of means is:

$\sigma_d=\sqrt{\frac{\sigma_a^2}{n_a}+\frac{\sigma_b^2}{n_b}}=\sqrt{\frac{8700^2}{18}+\frac{6000^2}{8}}=\sqrt{8705000}=2950$

The degrees of freedom are:

$df=n_a+n_b-2=18+8-2=24$

Then, the test statistic is:

$t=\frac{\Delta M-\Delta \mu}{\sigma_d} =\frac{(40,400-39,200)-0}{2950} =\frac{1200}{2950}=0.407$

For a statistic t=0.407, and df=24, the P-value is P=0.69. As the P-value is bigger than the significance level, the null hypothesis failed to be rejected.

If we would use the critial value approach, we would have to calculate the critical values for t, for df=24, two sided test and α=0.10.

The critical values, looking in a table, are t=1.711.

5 0

3 years ago

PLEASE HELP ASAP

Sedbober [7]

Brainly.com

What is your question?

Middle SchoolMathematics 5+3 pts

A water park keeps track of the number of times each visitor goes down water slides during their visit . The data shows the number of times 12 visitors went down a water slide. 4, 22, 16, 10, 11, 20, 20, 12, 6, 3, 11, 1 Create a histogram of this data.

Report25.03.2017

Answers

Portal0876 · Beginner

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THE BRAINLIEST ANSWER!

taskmasters

Taskmasters Ambitious

Given:

12 visitors

Visitor # Frequency of going down a water slide

1 4

2 22

3 16

4 10

5 11

6 20

7 20

8 12

9 6

10 3

11 11

12 1

Pls. see attachment for the histogram.

4 0

3 years ago