Help appreciated and please explain

the answer is 1/4

Step-by-step explanation:

so technically this is not that of a easy math question and to show you how it is because the answer is already in the question its saying that the CDE triangle is 1/4 of the ABC triangle so 1/4 and a decimal is 1 divided by 4 = .25 and .25 as a percent is 25% since the total height of the ABC tri is 36 you do 25 percent of 36 and if you know yo time tables you would see that 4x9=36 so 1/4 or 25% of 26 is 9 so thats the height of Tri. CDE and that concludes that since there are 4 of 25 in 100 then the situation 1/4 would mean the ABC triangle has 4 parts and Tri CDE is only 1 out of the 4/whole part.

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.

80% of the cookies

step-by-step explanation: