##### math flashcards
1 / 66
Term:
Definition:
Show example sentence
Show hint
Keyboard Shortcuts
• Previous
• Next
• F Flip card

#### Complete list of Terms and Definitions for math flashcards

Terms Definitions
5*5 25
6*5 30
11*6 66
multiplicative inverse reciprocal
rectangle area area = lw
multiplying exponents (x^a)^b = x^(a·b)
rectangular solid volume volume = lwh
roots √(xy) = √x · √y
sin of an angle opp / hyp
slope formula (y₂- y₁) / (x₂- x₁)
isosceles 2 equal sides, 2 equal angles
difference of squares a^2 -b^2 = (a+b)(a-b)
cos of an angle adj / hyp
probability probability = number of desired outcomes / number of total outcomes
constant not changing or varying; uniform; regular; invariable:
prime factors 2, 3, 5, 7, 11, ...
percentages part = (percent / 100) x whole
angles of triangle add up to 180 degrees
property that which a person owns; the possession or possessions of a particular owner:
special sin cos relationship sin^2(angle) + cos^2(angle) = 1
degree to radian degree# · (pi / 180 degrees)
inverse of a matix A^ -1&#13;&#10;only square matrices have it and there is only one
alternate angle two nonadjacent angles made by the crossing of two lines by a third line, both angles being either interior or exterior, and being on opposite sides of the third line.
average average = sum of terms / number of terms
Graphing < or > on a coordinate plane dotted line
Markov chain markov chain or a markov process in which the probablility of a system being in a particular state at a specific time depends only on the state of the system in the preceding time period
algebraic equation an equation in the form of a polynomial having a finite number of terms and equated to zero, as 2x3 + 4x2 &acirc;&circ;&rsquo; x + 7 = 0.
Factors ex. factors of 52 are 2, 4, 13, and 26
Sector The part of a circle that looks like a piece of pie. A sector is bounded by 2 radii and an arc of the circle.
straight angle the angle formed by two radii of a circle that are drawn to the extremities of an arc equal to one half of the circle; an angle of 180&Acirc;&deg;.
equation of circle with midpoint (h,k) ... (x - h)^2 + (y - k)^2 = r^2
fundamental counting principle if an event can happen in N ways, and another, independent event can happen in M ways, then both events together can happen in N x M ways.
Graphing ≤ or < on a coordinate plane shade downwards or to the left
transpose of a matrix given an m x n matrix A, the transpose of A, denoted by A^t is the n x m matrix whose columns are the corresponding rows of A
4*7 28
7*12 84
Inverse Variation y=k/x
Slope intercept form y=mx+b
full circle = 360 degrees
circle area pi · r^2
a^2 - 2ab + b^2 (a-b)(a-b)
distance formula √[(x₂- x₁)^2 + (y₂- y₁)^2)]
reals integers, rationals, plus special #s (like √2 or pi)
subtracting exponents x^a / x^b = x^(a-b)
sum a prefix occurring originally in loanwords from Latin (subject; subtract; subvert; subsidy); on this model, freely attached to elements of any origin and used with the meaning "under," "below," "beneath" (subalpine; substratum), "slightly," "imperfectly,"
Point-Slope form y - y₁= m(x - x₁)
like terms terms whose variables and their exponents are the same
logarithms y = log(little b)x asks b^y = x
order of opperations PEMDAS (Parentheses / Exponents / Multiply / Divide / Add / Subtract)
Chord The distance from one point on the circle to another point on the circle.
quadratic formula [-b ± √(b² - 4ac)] / (2a)
supplementary angles either of two angles that added together produce an angle of 180&Acirc;&deg;.
complementary angles either of two angles that added together produce an angle of 90&Acirc;&deg;.
integers ..., -3, -2, -1, 0, 1, 2, 3, ...
right cylinder volume volume = pi · r^2 · h
What is a PRODUCT? The result of numbers multiplied together.
orthogonal vectors u and v in Rn are orthogonal if they are perpendicular so u x v = 0
Greatest Common Factor ex. GCF of 200 and 60 is 20
identity matrix is the square (n x n) matrix whose entries match an rref matrix of the same size
area of sector (n degree / 360 degrees) · pi · r^2
Dividing by a negative number in an inequality You must flip the sign
What is the ASSOCIATIVE property? When three real numbers are added or multiplied together, it does not matter how the numbers are grouped, or associated, when performing the operation. Thus: (2+3)+4=2+(3+4)=9 and (2x3)4=2(3x4)=24
length of arc (n degree / 360 degrees) · 2 · pi · r
complex numbers i^0 = 1; i^1 = i; i^2 = -1; i^3 = -i; i^4 = 1; i^5 = i; i^6 = -1; i^7 = -i