Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
integers are
|
whole #s
|
|
exponential growth:
|
Sn= first term - nth term
divided by 1 - ratio between consecutive terms |
|
union of elements (U)
|
elements that are in either or both
|
|
intersection of elements (N)
|
common to both sets
|
|
relative primes
|
have no prime factors in common
|
|
the "part" keywords
|
is/are
|
|
the "whole" keywords
|
of
|
|
percent formula
|
part= percent x whole
|
|
to increase a # by a percent
|
add percent to 100, conver to decimal, and multiply
|
|
finding the original whole
|
ex. 25 percent increase over x is 1.25x.
|
|
ratios
|
of
---- to |
|
part to part ratios
|
each # in original ratio over the sum of the #s
|
|
average speed!
|
average speed= total distance / total time
v= d/t |
|
mode
|
value that appears most often
|
|
probability
|
favorable outcomes/ total possible outcomes
|
|
inverse variations
|
xy=k
k is constant |
|
distance formula
|
d= square root (x1-x2)2 + (y1-y2)2
|
|
midpoint formula
|
(x1 + x2 / 2) , (y1 + y2 / 2)
|
|
exterior angles of a triangle
|
are equal to the sum of the remote interior angles
|
|
the 3 exterior angles of a triangle add
|
up to 360 degrees
|
|
triangle inequality theorem
|
the length of 1 side of a triangle must be greater than the difference and less than the sum of the other two sides
|
|
30-60-90 triangle
|
x: x (radical 3) : 2x
|
|
45- 45- 90 triangle
|
x: x: x(radical 2)
|
|
interior angles of a polygon
|
sum of angles = (n-2) x 180
n is # of sides |
|
circumference of cirlce
|
C= 2 pie r
|
|
area of circle
|
pie r squared
|
|
area of a sector of circle
|
(n / 360) (pie r squared)
|
|
surface area of rectangle solid
|
SA= 2lw + 2wh + 2lh
|
|
volume of recntagular solid
|
V= lwh
|
|
volume of cylinder
|
v= (pie r squared) x h
|