Mental Math
10x5+11
61
y=mx+b
The equation of a line.
"F of..."
How to read a function
pi
3.14...
Method for solving (x+2)(x-5)
FOIL. x^2-5x+2x-10 ---> x^2-3x-10.
42x5
210
This is the variable usually used for slope.
M
You usually need one for every distinct variable.
A distinct equation.
Interior degrees of every triangle
180
Pythagorean Theorem.
a^2+b^2=c^2
(50/5-8)*16
32
The formula for slope.
y=(x2-x1)/(y2-y1)
Multiply by the denominator.
How to clear a fraction.
What you should draw into other shapes to make them easier to calculate
Right triangles (would also accept straight lines)
Desired outcomes over total possible outcomes.
Probability formula
30% of 500
150
Right to left, top to bottom.
The order of the quadrants.
The next step for isolating "x" in 5x+10xy
5x(1+2y)
Area of a circle
A=pi(r^2)
How to compare fractions.
Common denominator or decimals.
(7/2)+(1/8)
3.625
(x2+x1)/2 and (y2+y1)/2
Formula for finding midpoint between two points
If Phil earns 400 points for mental math and another unknown number of points from geometry and looses some additional number of points for algebra, how many points does he have?
400+G-A=points
Side ratios of a 45:45:90 triangle
x:x:x(root2)
Change the door you picked or stay with the same door?
The question asked in the Monty Hall Problem.