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Kipish [7]
3 years ago
13

Please help, last week of school and I don’t understand this at all

Mathematics
2 answers:
hoa [83]3 years ago
4 0

Answer:

The correct answer is B

Step-by-step explanation:

It's because when you're graphing the equation, more than or equal to symbol is a black line, therefore you can cross out A and C. It's B because it's more than 0, D if it was graphed would have the other side shaded, therefore its b

rodikova [14]3 years ago
3 0

Answer:

The answer to the problem is C

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Answer: 0.22

Step-by-step explanation:

We know that the best point estimate for the difference between two population mean is the difference between their sample means.

Given : For the 39 randomly selected upperclassmen, the sample mean was 0.12 and sample standard deviation was 0.42. For the 35 randomly selected underclassmen, the sample mean was 0.34 and the sample standard deviation was 0.87.

Let A denotes the population of upperclassmen and B denotes the population of underclassmen .

\overline{x}_A=0.12

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Then, the point estimate of the difference in the population mean volunteered between underclassmen and upperclassmen will be :-

\overline{x}_B-\overline{x}_A=0.34-0.12=0.22

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5 0
3 years ago
Please Help . Will Brainliest someone
rjkz [21]
The answer to this question is C
6 0
3 years ago
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How do I calculate percentage is a number? Ex. 30% is 15
puteri [66]
You first divide the number by 100 and then multiply it by the percentage that you are given
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3 years ago
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Find the percent of increase. Original Price: $200 Retail Price: $250
Alexxandr [17]

Answer:

The percent of increase is 25%

Step-by-step explanation:

Percentage increase = increase in price/original price × 100 = ($250 - $200)/$200 × 100 = $50/$200 × 100 = 25%

6 0
3 years ago
6. Katie is 2 years younger than her brother. In 12
Eva8 [605]

Answer:

4

Step-by-step explanation:

12/2=6

6*2=4

Hope this helps!

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3 years ago
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