Why is there no commutative property for subtraction or division

Because order matters when performing subtraction or division.

Step-by-step explanation:

Consider the provided information.

We need to determine why there no commutative property for subtraction or division.

Commutative property states that although the numbers in an expression are interchanged, there is no change in result.

Let us understand with the help of an example

For addition: The commutative rule is a + b = b + a.

An example in numbers would be 5 + 2 = 2 + 5

Both give 7 as result.

For Subtraction:  4 – 2 = 2, but 2 – 4 = –2

So, in the case of subtraction, moving the numbers around produces a different answer.

For division: 4 ÷ 2 = 2,  2 ÷ 4 =

So, in the case of division, moving the numbers around produces a different answer.

Hence, order matters when performing subtraction or division.

you need to show the graph

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.