What are prime numbers and how do prime numbers us find the lcm of two numbers? use an example in your explanation.

answer: prime numbers are when u can multiply it only once. for example, when u   multiply 1*1 u get one nothing else can't multiply it to get one.

prime numbers: 1,2,3,5,7

lcm is finding the lowest common denominator. example, 2/20-1/10

10: 10,20

20: 20,40

both has the same number so do this.

2/20-1/20 and get 1/20

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.

sorry i just need to anwers this to get points

step-by-step explanation: