What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y − 1?

Perimeter P of rectangle having length = x + 8 and width = y – 1 is 2x + 2y + 14.

Solution:

Need to determine perimeter P, of a rectangle.

Length of rectangle = x + 8

Width of rectangle = y – 1

As length and width are given in expressions, final result of perimeter will also be an expression.

Formula for perimeter of rectangle is as follows

Perimeter of rectangle = 2 (length + width)  

On substituting given values in formula of perimeter, we get

P = 2 ((x + 8) + ( y – 1 ) )  

=> P = 2( x + 8 + y -1 )  

=> P = 2 ( x + y + 7)  

=> p = 2x + 2y + 14

Hence perimeter P of rectangle having length = x + 8 and width = y – 1 is 2x + 2y + 14.

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.

his chances of getting a coin of higher value is 4/19

step-by-step explanation: