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Gravity
Math
Terms in this set (67)
Mean
Average
Median
Middle number
Mode
Number that occurs most often
absolute value
distance from zero on a number line
Negative X Positive
Negative.
-10 x 2 = -20
Negative x Negative
Positive
-3 x -3= 9
positive / negative
negative
20/-2= -10
negative/negative
Positive
-9/-3= 3
Positive/positive
Positive
20/2= 10
Multiply by powers of 10
Move decimal to the right
Divide by powers of 10
Move decimal to the left
scientific notation
Must use decimals to create a number between 1-10. The decimal always begins at the end of the number.
order of magnitude
Difference in the exponents of 2 numbers.
Range
Difference between the highest and lowest numbers
Area of triangle
A=1/2bh
Circumference of a circle
2(pi)r
semi-circle
1/2(pi)r-squared
Speed
Distance/Time
Surface area of a cube
6a²
X
Dependent variable - changes
The changes DEPEND on the independent variable.
The influencing factor
Y
Independent variable- controlled
does not get influenced by anything in the equation
Co-variables
The variables measured in correlational analysis.
negative correlation
as one variable increases, the other decreases
positive correlation
two variables change in the same direction, both becoming either larger or smaller
divide fractions
multiply by reciprocal
Percent
Percent/100=part/whole
Adding Fractions
change the fractions into the lowest common denominator and add the numerators
Subtracting Fractions
Find LCD and subtract numerators
Change a fraction to a percent
1. Divide the top of the fraction by the bottom
2. Multiply by 100
Multiplying Fractions
Multiply the numerator and multiply the denominator
Dividing Fractions
Invert (reciprocal) the second fraction and multiply
Distance
Rate x Time
Celsius to Fahrenheit
(C x 1.8) + 32 = F
Fahrenheit to Celsius
C=(F-32)/1.8
To determine: retail price
1. Change the % of markup to a decimal
2. Add it to 1
3. Multiply the result by the wholesale price
To find: percent increase
Amount of Increase/Original Amount
To find: wholesale price
1. Change the percent of markup to a decimal
2. Add 1
3. Divide the retail price by answer from step 2
To find: original price
1. Subtract the % discount from 100, move the decimal 2 places to the LEFT.
2. DIVIDE the sale price by the answer.
distance
D=rate/time
Speed
distance divided by time
Time
Distance divided by speed
Perimeter Formulas
Volume formula
Area Formulas
Pythagorean Theorem
a²+b²=c²
Angles
Units of Weight
16 oz= 1 pound
2000 pounds= 1 ton
1000 mg= 1 gram
1000 grams= 1 kilogram
1 kilogram= approx. 2.2 pounds
Units of Liquid Volume
8oz= 1 cup
2 cups= 1 pint (16oz.)
2 pints= 1 quart (32oz.)
4 quarts= 1 gallon (128 oz.)
1 liter= approx. 1 quart
1000 liters= 1 kiloleter
100 centileters= 1 liter
10 millileters= 1 centileter
FOIL
First, Outside, Inside, Last
(3x-2)(x+3)
First x First
Outside x Outside
Inside x Inside
Last x Last
Properties of Exponents
Percent Change Formula
Percent Change =(final value−initial value)/initial value×100
Is
Equal
Per
Divided by
Common Conversions
1000 millisecond= 1 second
1000 watts= 1 kilowatt
Ratio
A comparison of two numbers by division
Exponents and Properties
Units of Length
3ft= 1 yd
5280 ft= 1 mile
1000 meters= 1 kilometer
1 meter= approx. 1 yard
2.5 cm= approx. 1"
Angles
Right Angle= 90*
Acute Angle= less than 90*
Obtuse Angle= greater than 90*
Complementary Angles= add up to 90*
Supplementary Angles= add up to 180*
Geometry
...
Rate of Change
Amounts Cheat Sheet
Formulas Cheat Sheet
Polygon
Any plane figure bounded by straight lines.
Line graph shows
Changes over time
Histogram (bar graph)
Frequency of occurences/or shows comparisons
circle graph
a graph that shows parts of a whole as percentages
scatter plots
a graphic that shows how two different variables are related
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