Cory writes the polynomial x^7+3x^5+3x+1. melissa writes the polynomial x^7+5x+10. is there a difference between the defree of the sum and the degree of the difference of the polynomials?

Yes, the degree of sum is differ from the degree of difference.

Step-by-step explanation:

Degree of a polynomial is a highest power of its monomials ( single term).

Here, the given polynomials are,

By adding these two polynomials,

Since, the highest power of x in this result = 7

Hence, the degree of sum of the given polynomials = 7

Now, by subtracting the given polynomials,

Since, the highest power of x in this result = 5,

Hence, the degree of difference of the given polynomials = 5

Thus, both the degree of sum and difference are different.

D- Adding their polynomials together results in a polynomial the degree 7, but subtracting one polynomial from the other results in a polynomial with degree 5.

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.