There are three questions. I'll give brainliest if you show your work for all three of them. Plz help and answer quickly!
What square root best approximates the point on the graph?
A square root of 5
A square root of 15
A square root of 28
A square root of 53
Hassan used the iterative process to locate the square root of 15 on the number line.
Which best describes Hassan’s estimation?
Hassan is correct because the square root of 15 is about 0.4
Hassan is correct because the point is on the middle of the number line.
Hassan is incorrect because the square root of 15 is less than 0.4
Hassan is incorrect because the point should be located between 0.1 and 0.2.
The point plotted on the number line is the square root of x.
What is the approximate value of x?
4
9
17
20

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.