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kvv77 [185]
3 years ago
10

Use the figure to find the measures of the numbered angles.

Mathematics
2 answers:
Agata [3.3K]3 years ago
7 0

Answer:

im so sorry idk

Step-by-step explanation:

storchak [24]3 years ago
4 0

Answer: 5=49, 6= 131

Step-by-step explanation:

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Petty has 81 red balls, which she wants to arrange in rows. of the number in each row must be equal to the number of rows, how m
monitta

Answer:

9 balls in each row.

Step-by-step explanation:

3 0
3 years ago
Solve: /3=46<br><br> x/3 is a fractions
den301095 [7]

answer :138

x/3=46

x=46*3

x=138

8 0
3 years ago
A random sample of 864 births in a state included 426 boys. Construct a 95% confidence interval estimate of the proportion of bo
oksian1 [2.3K]

Using the z-distribution, it is found that the 95% confidence interval is (0.46, 0.526), and it does not provide strong evidence against that belief.

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which:

  • \pi is the sample proportion.
  • z is the critical value.
  • n is the sample size.

In this problem, we have a 95% confidence level, hence\alpha = 0.95, z is the value of Z that has a p-value of \frac{1+0.95}{2} = 0.975, so the critical value is z = 1.96.

We have that a random sample of 864 births in a state included 426 boys, hence the parameters are given by:

n = 864, \pi = \frac{426}{864} = 0.493

Then, the bounds of the interval are given by:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.493 - 1.96\sqrt{\frac{0.493(0.507)}{864}} = 0.46

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.493 + 1.96\sqrt{\frac{0.493(0.507)}{864}} = 0.526

The 95% confidence interval estimate of the proportion of boys in all births is (0.46, 0.526). Since the interval contains 0.506, it does not provide strong evidence against that belief.

More can be learned about the z-distribution at brainly.com/question/25890103

4 0
2 years ago
Solve for x.<br><br> 7 - (2x + 11) + 3(3 - x) = 20
zvonat [6]

Answer:

your answer should be x = -3

7 0
2 years ago
Read 2 more answers
500m:2km in it's lowest form<br>​
blagie [28]

500m:2km (change km to m)

500m:2000m (divide by 100)

5m:20m (divide by 5)

1m:4m

7 0
3 years ago
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