Nash is training for a marathon and decides to train for 26 miles every week. In the first week, the ratio of the number of miles he ran to the number of miles he walked 3:10

Nash ran 6 miles and walked 20 miles.

Step-by-step explanation:

Note: Consider we need to find the number of miles he ran and the number of miles he walked in the first week.

Total distance = 26 miles every week.

Ratio of the number of miles he ran to the number of miles he walked is 3:10.

Let he ran 3x miles and walked 10 x miles. So,

Total distance = 3x+10x

Divide both sides by 13.

The value of x is 2.

Number of miles he ran = 3(2) = 6 miles

Number of miles he walked = 10(2) = 20 miles

Therefore, Nash ran 6 miles and walked 20 miles in the first week.

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.

14

step-by-step explanation: