By: Adrianna Williams
Plots scattered everywhere
Scatter Plots
Plots are going down
Plots are going up
Solving Multi-steps Equations:
1.Idenify the party-goers
2.Eliminate party-goers
3.Get x (the host) alone
4.Check your solution
2x- -5=21 21+5=26
2 Divided by 2 cancel out.
26 divided by 2 is 13
So x=13
Ex:
2x=8
The 2 is the girl friend and boy friend.
The x is the host.
The 8 is the neighbor
Probability
Theoretical probability- is what should happen in a given
event.
Experimental probability- is what actually occurs during
the event.
Independent event- is an event where the outcome of
one even does not affect the second event.
Dependent event- is an event where the outcome of the
first even affects the outcome of the second event.
Ex:
Flipping a coin is a independent event
Ex:
Drawing a card and take one out is a dependent event
Bar Graph
A bar graph
displays data
with vertical of
horizontal bars.
Line Plots
x= number of people
Use a number line and x’s
Histogram
Shows the
number of data items
that occur within each
internal
(Hint: bars touch)
Negative Fractions
The bigger the negative number the
smaller it’s value.
-3/5
-1
.60
1/2
-1/2
-.50
-12
0
.50
1
Fractions to Decimal Steps:
1.
To change fractions to a decimal divide the numerator by the
denominator.
2. 1/2 2÷1
To change a decimal to a percent multiply by 100
Ex: ½ x 100 or .5 x 100(move 2 places to right)
3.To change percent’s to a fraction put the % over 100 then simplify.
Ex: 80%=80/100
10÷80 =8÷2=4
10÷100=10÷2=5
4.To change percent to a decimal divided by 100
Ex:80%=.8(move decimal left 2 places.)
Scientific Notation
Is ways of express really big numbers or
really small numbers.
Ex: 25,000,000,000,000 or
0.000000000000025
Ex:2.5x10¹³(positive decimal right)
2.5x10⁻¹⁰(decimal front)
Subtracting Integers:
Same – Change – Change
1.)1st number stays the same
2.)Change sign to addition
3.)Change the number after it to its opposite
4.)Use addition rule
Ex:⁻3 – (⁻6)
⁻3+6=(3)
Ex:10-(15)
10+⁻15=(⁻5)
Multiply and Divide Integers
Signs are the same the answer is positive,
signs are different the answer is negative,
even number of – signs the answer is
positive, odd number – signs the answer is
negative.
Examples of Square Roots:
√1=1
√4=2
√9=3
√16=4
Percent of a number
Percent
20%=
Decimal
.2
35%=
.35
10%=
.1
Pythagorean Theorem
6
A²+B²=C²
*Use this if you are looking for C.
If you know C
C²-A²=B²
Hypotenuse (always longest)only works with side. Right triangles
A and B make the right triangle
Ex1:A²+B²=C²
6²+8²=C²
36+64=100
√100
example
C=10
C
8
Surface Area
S=2∏rh+2∏r²
S=2(3)(2)10+2(3)(2²)
S=120+24
S= 144cm²