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jekas [21]
3 years ago
13

I need help with both questions 14 and 15

Mathematics
1 answer:
Nataly [62]3 years ago
4 0
For number 14: 20 is not a perfect number and 21 is a perfect number
for number 15: 7 and 9
& 11 and 13
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Melissa has three different positive integers. She adds their reciprocals together and gets a sum of 1. What is the product of h
sergiy2304 [10]
The integers would be 2,3, and 6.

Check:

1/2+1/3+1/6=3/6+2/6+1/6=6/6= 1 

Hope this helped, and if it did, then please vote brainliest!
7 0
4 years ago
A researcher at a school of nursing decides to investigate the correlation between a pre- admission HESI examination, high schoo
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Answer: D. Predictive validity

Step-by-step explanation: Predictive validity can be explained as a method of determining the degree or level of correctness of a prediction using pre-existing information or data and values obtained from the actual measurement.

In the scenario above, the researchers investigates the correlation or relationship between the predicted value obtained using a pre- admission HESI examination, high school GPA, and SAT scores and the actual grade received upon completion of the first year. This process is to analyze or determine the validity of our prediction.

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3 years ago
Find the slope of the line.
Snowcat [4.5K]
I think it is 2,2 ? I might not be sure
3 0
3 years ago
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natita [175]
The next step is to add 9

7 0
4 years ago
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RideAnS [48]

Answer:

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Hockey stick is an example of third class where mechanical advantage is less than one as the speed of the end of point A is critical.

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