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Fraction to Decimal
ANSWER:
2/4=1/2=0.5
Percent to a fraction
ANSWER:
12% = 12/100
Fractions with Common Denominator
ANSWER:
2/3 x 3/4 x 1/2 = 16/24, 18/24/, 12/24
Fraction on a Number Line
ANSWER:
11/16 (Please excuse my dear aunt sally)
Distributive Property
ANSWER:
A( B + C)
Commutitive Property
ANSWER:
A+B=B+A
,Associative Property
ANSWER:
A + (B + C) = (A + B) + C
A Perfect square
ANSWER:
Square Root of 144 is 12
Additive Inverse Property
ANSWER:
4 + -4 = 0
Multiplicitive Inverse Property
ANSWER:
4 x 1/4 = 1
Function
ANSWER:
Function w/out exponent generally produces a straight line (Stem Line).
Function with exponent generally produces a curved line
Slope Formula
ANSWER:
y=mx+b
rise/run or change in y over change in x
Factoring Equations
ANSWER:
(3x + 3y + z) + 2 ( x+y+z) = 5 (x + y + z)
Slope Formula 2
ANSWER:
y2-y1/x2-x1
Y Intercept
,ANSWER:
the point where the line crosses the y axis the value for y when x=0.
Ratio
ANSWER:
A comparison of two quantities.
2 choc. chips/every 4 oatmeal cookies
Ratios Cont.
ANSWER:
When we know two rations are proportionate, and we have 3 of 4 quantities, we
can solve for the 4th using cross multiplication.
Ex. Alicia is using a garden hose to fill a pool. For every 2 min = 3 in of water.
How long if she wants 2 ft depth? 2/3 = x/21 = 3x = 42. X = 14 min.
Parabola Formula
ANSWER:
The U-shaped graph of a quadratic function
Parabula Formula
Inequalities
ANSWER:
a mathematical sentence involving <, >, or = plus < or >.
Solve: 5. -3x -1
When graphing inequalities, begin by graphing the line then determine the
shading (+ up, - down).
Solve for systems of equations and quadratic equations
ANSWER:
Eliminate one of the variables and solve for x and y. 2x + y = 3
3x + 2y = 9
x = -3 & plug in to find Y. Y= 9.
Factoring
ANSWER:
, Rewriting an expression as the product of its factors
Measurement
ANSWER:
Kilometer- 1,000 meters
Hectometer- 100 meters
Decameter- 10 meters
decimeter- 1/10 meters
centimeters- 1/100 meters
millimeters- 1/1000 meters
supplementary angles
ANSWER:
Two angles whose sum is 180 degrees
complimentary angles
ANSWER:
Angles whose measure adds up to 90 degrees.
acute angle
ANSWER:
an angle that measures less than 90 degrees
obtuse angle
ANSWER:
An angle that measures more than 90 degrees but less than 180 degrees
right angle
ANSWER:
an angle that measures 90 degrees
Parallel Lines
ANSWER:
lines in the same plane that never intersect
Equilateral Triangle