Distance between the lines 3x +4y =9 and 6x + 8y =15 is

Step-by-step explanation:

Given lines in standard form:

We can see they have same slopes:

The lines after simplification of the second one:

Since the lines are parallel, use the distance formula:

Substitute the values and find d:

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.

well kind of. you get friend requests. and you can accept them or not so yes.

step-by-step explanation: