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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 (x1x2)2 + (y1y2)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


306090 triangle

x: x (radical 3) : 2x


45 45 90 triangle

x: x: x(radical 2)


interior angles of a polygon

sum of angles = (n2) 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
