Kate is growing two plants for a science project. •plant A little starts at 6 inches and grows 1/2 inch per week. • plant B starts at 4 inches tall and grows 3/4 inches per week. After how many weeks will the plants be the same height?

8 weeks

Step-by-step explanation:

Let the number of weeks be x.

Plant A little starts at 6 inches and grows 1/2 inch per week.

This means that after x weeks, the height of the plant will be:

6 + (½ * x)

6 + x/2

Plant B starts at 4 inches tall and grows 3/4 inches per week. This means that after x weeks, the height of the plant will be:

4 + (¾ * x)

4 + 3x/4

After a particular number of weeks, their heights will be the same. That is:

6 + x/2 = 4 + 3x/4

To find x, collect like terms and simplify:

6 - 4 = 3x/4 - x/2

2 = x/4

=> x = 2 * 4 = 8 weeks

After 8 weeks, their heights will be the same.

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.

45

step-by-step explanation:

to find a percentage, add a decimal in front and multiply it by the other number.

.25 times 180= 45