Can someone plez help me I’m a freshman and this is homework

units is the area of the triangle

Skills needed: Combining Like Terms, Triangle Area

Step-by-step explanation:

1) First, let's understand two important concepts:

---> The area of a triangle:

is the area

The base is one of the sides of the triangle, and the height is perpendicular to the base and connects to a vertex usually opposite of the base.

Perpendicular means to intersect at a right angle (that square thing that is drawn into the diagram signifies a right angle).

---> Combining Like Exponent Terms

Let's say we have: and

If we are multiplying, we are doing

Example:

Think about it: 2 to the 4th power is 16, and 2 squared is 4. When multiplying those together you get 16 * 4  = 64. The method above yields the same answer.

2) Now, let's apply these two concepts to the problem shown. We are given a base () and a height perpendicular to the base ().

---> Let's substitute in for the formula:

Let's combine like terms now:

can be combined and multiplied as they are all constant numbers.

Now let's combine the exponent parts

We can split into two groups for the two different variables ()

---> can be combined (remember ) -->

---> can be combined -->

So we have: as the answer.

You can take out the multiplication signs:

(When you have unlike terms, you do not need to separate with multiplication signs)

ad = ae + ed = y + 7

similar triangles therefor

ac/ab = ad/ae

6/4 = (y + 7) / y

cross multiply

6y = 4(y + 7)

6y = 4y + 28

2y = 28

y = 14

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.