William arcenio is remodeling his home. In order to save money, he is upgrading the plumbing himself. He needs 36 pieces of copper tubing, each 2/9 of a foot long. If he has 11-foot piece of tubing, will that be enough? How much more does he need or how much tubing will he have left over?

He needs 2 feet more tubing.

Step-by-step explanation:

William Arcenio needs 18 pieces of copper​ tubing, each 2/9 of a foot long.

So, total length needed = 2/9 x 18 = 4 feet

He has a 2​-foot piece of​ tubing.

So, he does not have enough tubing.

He needs 2 feet more tubing.

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.

stop cheating

step-by-step explanation: