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damaskus [11]
3 years ago
11

Which points are the vertices of the ellipse?

Mathematics
2 answers:
Phoenix [80]3 years ago
6 0
Points m and n
Are the answer
Firdavs [7]3 years ago
3 0

Answer:

Your answer is A) points G and H

Step-by-step explanation:

I took the test on edge 100%

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In the past, 21% of all homes with a stay-at-home parent, the father is the stay-at-home parent. An independent research firm ha
Afina-wow [57]

Answer:

A sample size of 79 is needed.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

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

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

\pi = 0.21

The margin of error is:

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

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.  

What sample size is needed if the research firm's goal is to estimate the current proportion of homes with a stay-at-home parent in which the father is the stay-at-home parent with a margin of error of 0.09?

A sample size of n is needed.

n is found when M = 0.09. So

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

0.09 = 1.96\sqrt{\frac{0.21*0.79}{n}}

0.09\sqrt{n} = 1.96\sqrt{0.21*0.79}

\sqrt{n} = \frac{1.96\sqrt{0.21*0.79}}{0.09}

(\sqrt{n})^{2} = (\frac{1.96\sqrt{0.21*0.79}}{0.09})^{2}

n = 78.68

Rounding up to the nearest whole number.

A sample size of 79 is needed.

4 0
3 years ago
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
skelet666 [1.2K]
-5t2 + 40t = 0
5t(-t+ 8) = 0
5t = 0 or t = 8
7 0
3 years ago
What would it mean if there was an outbreak of cholera? A. The disease has infected a few people spread out over a large distanc
Dmitry_Shevchenko [17]

Answer:

I think that it is B because its the only answer that makes sense

Step-by-step explanation:

5 0
3 years ago
What is the area of the entire shape if the red trapezoid has an area of 1 square inch?
mr Goodwill [35]
It would be 1 square inch. You can't make a trapezoid cause if you tried to it would turn into a square.
5 0
3 years ago
Help me plz :))))) <br>​
Vika [28.1K]

Answer:

2 3 1 3

Step-by-step explanation:

7 0
3 years ago
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