Answer:
72
Step-by-step explanation:
It is the furthest away from the mean.
Answer: Option C (
±
)
Step-by-step explanation:
1. To solve this problem you must use the Quadratic formula, which is used to solve quadratic equation. This formula is shown below:

2. Substitute values. Then, you have:


3. Then,you obtain the following result:
±
Answer:
4.5
Step-by-step explanation:
The formula for solving area in parallelograms is base x height.
The base is 2.5 and the height is 1.8
2.5x1.8=4.5
<u>ANSWER </u>

<u>EXPLANATION</u>
We the have the equations,

Multiplying through by negative one gives,

Also

and

Dividing through by 2 gives

Making z the subject gives,

Now we substitute equation (3) into equation (1) and (2)
Equation (3) in to equation (1) gives,

This implies that;


We now put equation (3) in (2) to get,

This implies that



But

So,




Dividing through by negative 9 gives

and


Therefore 
28% = 28 / 100
As a rate per 100 is: 28 per 100.