The sum of x and y numbers is 38. One number, x, is 22 less than y. What is the product of x and y.

x = 8

y = 30

Step-by-step explanation:

This is a simple systems of equations problem. You'd want to write 2 equations for the 2 pieces of information they gave you.

x + y = 38

y - 22 = x

There are multiple ways to solve it, but since they give you what x equals, I would substitute in into the other equation.

(y - 22) + y = 38

2y - 22 = 38

2y = 60

y = 30

You can take y = 30 and plug it into an original equation for the value of x.

x + 30 = 38

x = 8

I hope this helped!

e.

step-by-step explanation:

because there are always 10 numbers in a phone 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.