Me i cant do the problem im dying halp
2x + 4y = 24 and 5x + y = 15 as the first step, he decided to solve for x in the first equation because it has a small, even number for the coefficient. jill told him there was a more efficient way. what reason can jill give for her statement? the variable y in the second equation has a coefficient of one so there will be fewer steps to the solution. the variable x in the second equation has a coefficient of 5 so it will be easy to divide 15 by 5. the variable y in the first equation is divisible by 2 so it will be the most efficient way to start. the variable y in the first equation has a larger even number. when dividing by 4, the solution will be a smaller number

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.