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attashe74 [19]
3 years ago
14

List 3 words that indicate you are working with negative numbers.

Mathematics
1 answer:
dalvyx [7]3 years ago
5 0
Negative
Minus
Below
I think is the right answer
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Amelia earned $60 for 5 hours of work. What is the unit rate of Amelia's earnings in dollars per hour?
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Answer:

y12/5

Step-by-step explanation:

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4 years ago
An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step 2 of 2 : Suppose a sample of
rewona [7]

Answer:

The 80% confidence interval for the population proportion of oil tankers that have spills each month is (0.199, 0.257).

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}.

Suppose a sample of 333 tankers is drawn. Of these ships, 257 did not have spills.

333 - 257 = 76 have spills.

This means that n = 333, \pi = \frac{76}{333} = 0.228

80% confidence level

So \alpha = 0.2, z is the value of Z that has a pvalue of 1 - \frac{0.2}{2} = 0.9, so Z = 1.28.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.228 - 1.28\sqrt{\frac{0.228*0.772}{333}} = 0.199

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.228 + 1.28\sqrt{\frac{0.228*0.772}{333}} = 0.257

The 80% confidence interval for the population proportion of oil tankers that have spills each month is (0.199, 0.257).

6 0
3 years ago
3(2x+1)=21 <br> Solve this multi-step equation using the distributive property
Tasya [4]
3 (2x + 1) = 21
6x + 3= 21
-3 -3
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Divide each side by 6, and x equals 3.

3 (2(3) + 1) = 21
3 (6 + 1) = 21
18 + 3 = 21


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3 years ago
Please help with this geometry problem. Show how to solve too.
d1i1m1o1n [39]
May be 23. cause you’re trying to find the length from F to H. the length from F to G is 11 and G to H is 12. so just add them together and you got 23. FH = 23
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3 years ago
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