Rules and Axiomatics Flashcards
Distributive law
A(b+c)=ab+ac
A(b-c)=ab-ac
Square root of 1
1
Square root of 2
1.4
Square root of 3
1.7
Square root of 4
2
Expressions of Quadratic Equations
- X^2 - Y^2
Unfactored form?
Expressions of Quadratic Equations
- (X+y)(x-y)
factored form?
Expressions of Quadratic Equations
- (X+y)^2
Unfactored form?
Expressions of Quadratic Equations
- X^2 + 2xy + y^2
factored form?
Expressions of Quadratic Equations
- (X-y)^2
Unfactored form?
Expressions of Quadratic Equations
- X^2 - 2xy + y^2
factored form?
plugging in values
ZONE F
Zero
One
Negatives
Extreme values
Fractions
Percentage increase/decrease formula
Percent change = difference / original x 100
Standard deviation percentages for normal distribution
2%, 14%, 34%
Triangle third side rule
The length of any one side of a Triangle must be less than the sum of the other two sides and greater than the difference between the other two sides
Area of triangle
1/2 (base x height)
To solve a permeation (arrangement of things in particular order)
- Number of slots
- Number of options for each slot
- Multiply
To solve a combination (a group without matter to order of elements)
- Number of slots
- Number of options for each slot
- Divide by factorial of number of slots
Group equation
Total = G1+G2-B+N
most common right triangles
3, 4, 5
6, 8, 10
5, 12, 13
length of diagonal of square
(side of square) x (square root of 2)
height of equilateral triangle
(1/2 length) x (square root of 3)
circumference of circle
2(radius)(pi) or (diameter)(pi)
area of circle
(pi)(radius squared)
equation of a line (slope)
y = mx + b
m = slope, b = y-intercept
calculate slope
rise / run or (y2-y1)/(x2-x1)
Any number divided by 0 is
Undefined