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meriva
3 years ago
13

I need to know if the answer to number 9. Is correct

Mathematics
1 answer:
slava [35]3 years ago
8 0
The answer to number 9 would be 43. 

Since it tells you that there is a straight angle that would equal 180. So I added up 61 30 and 46. I got 137. Then subtracted 137 from 180 and got 43.
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Answer:  Choice B

There is not convincing evidence because the interval contains 0.

========================================================

Explanation:

The confidence interval is (-0.29, 0.09)

This is the same as writing -0.29 < p1-p1 < 0.09

The thing we're trying to estimate (p1-p2) is between -0.29 and 0.09

Because 0 is in this interval, it is possible that p1-p1 = 0 which leads to p1 = p2.

Therefore, it is possible that the population proportions are the same.

The question asks " is there convincing evidence of a difference in the true proportions", so the answer to this is "no, there isn't convincing evidence". We would need both endpoints of the confidence interval to either be positive together, or be negative together, for us to have convincing evidence that the population proportions are different.

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So he covered 7 1/2 ft (or 7.5ft)
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3 years ago
What is the diameter of a circle with 28.26 as the area
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Answer:

6

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3 years ago
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If A is a square matrix of order 2, then det(-3A) is *
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Answer:

c. 9 det A

Step-by-step explanation:

Given the following data;

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<em>Substituting into the equation;</em>

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Simplifying, we have;

∣-3A∣ = 9∣A∣

= 9 detA

<em>Therefore, det (-3A) = 9 detA</em>

6 0
3 years ago
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