SAT math formulas
Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!
number of degrees in the interior of an n-sided polygon
(n - 2) · 180
general form for a quadratic function
(this is a parabola) y = ax^2 + bx + c
Average to sum
Sum= Average*Number
Mean
The Average, (A+B+C)/3
Harmonic Mean Formula
The average of two speeds=(2*speed1*speed2)/(speed1+speed2)
rule of sets
X is one set, Y is another, both is included in A & B. Total = X + Y - Both + Neither
Distance =
distance = rate · time
Link
http://satprepget800.com/sat-math-formulas-memorize/
Median
the middle when the numbers are in numerical order
Mode
the most frequent number
triangle rule
the third side of a triangle is the amount of numbers between the difference and sum of the other two sides
