Section 1
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Quadratic Formula
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Last updated
7 years ago
Date created
Mar 1, 2020
Cards (72)
Section 1
(50 cards)
Quadratic Formula
x = -b ± √(b² - 4ac)/2a
integers have to be...
whole numbers
mode
most often
words meaning equal to
is same as equivalent
equation of a circle
(x-h)^2+(y-k)^2=r^2
median
middle number
quotient
product of division
percent formula
part/whole x 100
inequalities
if you multiply or divide by a negative, remember to flip the sign -2x+3<3 -2x<8 x>-4
what to use if you're missing an angle, arc, or circumference
absolute value |2x-3| = 15
solve twice |2x-3|=-15=. -6 |2x-3|=15=. 9
Triangle Inequality Theorem
the missing side has to be greater than the difference of the given sides 8-3=5 & can't go above 8=3=11. integer possibilities: 6,7,8,9,10
completing the square x^2+4x+2=0
real number
not imaginary
addition clause transition
and
Circumference of a circle formula
C=2πr
system of equations
integer
"whole" number
Pythagorean Theorem can only be used with which triangle..
right triangle
equation of a circle
(x-h)²+(y-k)²=r²
outlier
"oddball"
equating coefficients
cause and effect sentence transitions
- thus - therefore - as such - consequently - as a result - hence
similar triangles
- angles are the same - proportional sides (in the same ratio)
Em Dash (long dash)
to show an interruption or change of some kind: "I can smell you--squirrel!" to indicate nonessential info: "Lexi-- who likes to play soccer-- enjoys eating food."
product
product of multiplication
Area of a circle formula
A=πr²
biased
generalized statement
sector
a portion of the area
addition sentence transition
- also - moreover - in fact - then -furthermore - likewise - next - in addition - finally - in other words - indeed - in conclusion -similarly - for example - for instance
central angle
central angle and arc are directly related
range
high - lowest
chord
both endpoints on the circle
"in terms of"
solve for whatever comes before the phrase find x in terms of y:
Special Right Triangles
matrix
a way to multiply a group of numbers by another group of numbers
standard deviation
distance between points
cause and effect clause transition
- because - since - as - such that
"of"
multiply
contrast sentence transition
- however - on the other hand - nonetheless - still - instead - despite - meanwhile - regardless
equilateral triangle
180/3 = 60
contrast clause transition
- yet - unless - while - although - whereas - otherwise
arc
a portion of the circumference of a circle
mean
average
percent change
original - new/original x 100%
x+y=10 x-y=? x^2-y^2=40
inference clue words
- infer - imply - tone - suggest - attitude - most likely
sum
result of addition
scalene triangle
all sides are different and all angles are different
difference
result of subtraction
Section 2
(22 cards)