D -9 because it has a -3 and its going to be the same - sign
There are no numbers for this, thus you will have to use the quadratic formula.
Answer:
216
Step-by-step explanation:
18 which is the base will be multiplied by the height which is 12 giving you
18 x 12 = 216
Answer:
1.75
Step-by-step explanation:
If a and b are two numbers, then their arithmetic mean is

Given:

Divide this equation by 10:

Now, divide it by 2:

# of points Farid has = b+35.
So the expression would be b+35.