What is x?

question 8 options:

9

24

33

15

33

Step-by-step explanation:

Along the left side we have that the 2 segments split by the segment x are congruent to one another.  Same with the segments split on the right.  That means, logically, that the segment x is exactly halfway between the 2 lines with lengths of 18 and 48.  Half way between 18 and 48 is the average of those 2 numbers, which is 33.

i used to know how to do this in 7th but i forget easily

step-by-step explanation:

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.