13/143 as a unit fraction

1/11

Step-by-step explanation:

You can divide both the top and the bottom since a unit fraction has a numerator of 1. 13 divided by 13 is 1 and 143 divided by 13 is 11.

Your answer is 1/11.

Hope this Helps!!! :)

45 degres

step-by-step explanation:

sorey if i hav bad engelish im bad engelish

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.