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maks197457 [2]
3 years ago
10

Zool X

Mathematics
1 answer:
Mars2501 [29]3 years ago
4 0
BOOKMARK is the answer to this question
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The midpoint of RS is N(-4,1). One endpoint is S(0,-7).
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3 years ago
Which of the following is the equation for the graph shown?
masha68 [24]

The equation of the circle shown is:

x^2 + y^2 = 100

<h3>What is the equation of a circle?</h3>

The equation of a circle of center (x_0, y_0) and radius r is given by:

(x - x_0)^2 + (y - y_0)^2 = r^2

From the graph, it can be seen that the center of the circle is (0,0), thus (x_0, y_0) = (0,0) and the radius is of r = 10, hence the equation is:

x^2 + y^2 = 100

You can learn more about the equation of a circle at brainly.com/question/24307696

8 0
2 years ago
A company considers buying a machine to manufacture a certain item. When tested, 28 out of 600 items produccd by the machine wer
weqwewe [10]

Answer:

The p-value of the test is 0.9918 > 0.05, which means that we fail to reject H_0, as we do not have enough evidence to say that defect rate of machine is smaller than 3%.

Step-by-step explanation:

The null and alternate hypothesis are:

H0:p≥0.03

Ha:p<0.03

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

0.03 is tested at the null hypothesis:

This means that \mu = 0.03, \sigma = \sqrt{0.03*0.97}

28 out of 600 items produced by the machine were found defective.

This means that n = 600, X = \frac{28}{600} = 0.0467

Value of the test-statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{0.0467 - 0.03}{\frac{\sqrt{0.03*0.97}}{\sqrt{600}}}

z = 2.4

P-value of the test:

The p-value of the test is the probability of finding a sample proportion below 0.0467, which is the p-value of z = 2.4.

Looking at the z-table, z = 2.4 has a p-value of 0.9918.

The p-value of the test is 0.9918 > 0.05, which means that we fail to reject H_0, as we do not have enough evidence to say that defect rate of machine is smaller than 3%.

7 0
2 years ago
Factor y + 5y + 6.<br> ??
maxonik [38]

Answer:

6(y+1)  Hope this helps!!

Step-by-step explanation:

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