Area
Area of a trapezoid
A=.5h(b1+b2)
Pythagorean theorem
a2+b2 = c2
Slope intercept formula
y = mx + b
Probability
total desired outcomes
---------------------------
total possible outcomes
Annotate
Circle numbers. Underline key words. Box question.
1/3 and 2/3
.333333333 and .666666666
With the bar over them
Area of a rectangle
A = lw
Degrees in a quadrilateral
360
Distance formula
D = sqrt ((y2-y1)2 + (x2-x1)2)
Mean
sum of items in a set
------------------------
number of items in a set
Trig
SOHCAHTOA
1/4 and 3/4
0.25 and 0.75
Area of a triangle
A = 1/2bh
Degrees in a straight line or triangle
180
m = (y2-y1) / (x2-x1)
Median
Middle number in a set when you put the numbers in order from least to greatest
Exponents
ADD exponents when multiplying like bases, SUBTRACT exponents when dividing like bases
Reduce 2/4 and give the decimal
1/2 and 0.5
Area of a square
A = s2
Translations
Left = -
Right = +
Up = +
Down = -
Volume of a prism
V=lwh
Mode
Most common number in a set
How do you make fractions into decimals? Use this example 1/2
in your calculator 1 divide 2
1/5, 2/5, 3/5, 4/5
0.2, 0.4. 0.6, 0.8
Area of a circle
A = pi(r2)
Pythagorean triples
3, 4, 5 / 5, 12, 13 / 8, 15, 17
Volume of a cylinder
V=pir2h
Circumference
Perimeter of a circle. C = 2pir
Plug in Answers
If algebraic & answers are numbers. C/H
Give all these as decimals:
1 and 2/5
3 and 2/3
5 and 3/4
1.4, 3.6666, 5.75