Slope = rise/run
3 down, 1 left: 3/1 = 3
Y = 3x + b
Plug in any point
1 = 3(1) + b, b = -2
Solution: y = 3x - 2
Formula for area of a trapezoid: a = [(b1 + b2)/2] x h
Applied:
a = [(11 + 14)/2] x 10
a = [25/2] x 10
a = 12.5 x 10
a = 125
The area of the trapezoid is 125 meters squared.
Answer:
B
Step-by-step explanation:
I am assuming that the university has much more than 100 students so 100 people is just a small sample.
Since all the answer have the letter r in it, r would be the unknown number.
In math the "/" line represents division.
So 50 divided by an unknown number would become 50/r/
The answer is D.
Answer:

Step-by-step explanation:
Triangle DEF is similar to triangle HGF.
Therefore the corresponding sides are proportional.
We can write the following equations for the corresponding sides.
This implies that,

This gives us,

We cross multiply to get,

We divide through by 5 to get,

We multiply to get,

Grouping like terms gives,

We simplify to obtain,
The correct answer is C