Exam notes

Independent event

-The outcome of one event has no effect on the outcome of another event.
Ex. Flipping a coin, Rollin a die

Sample space
- all possible outcomes of an experiment.
Ex. Heads or Tails (coin)

How to find area of a triangle

First you get the base and the height and you divide it by two and you get your area.
B x H and then divide it by two.

Number Lines

Number lines are help ways to figure out integer questions.
   -1-2-3-4        1 2 3 4
<--------0-------> 
             ----->
               +2
The answer is +2

exam review

Number Coefficent: is a number that multiplies the variables.

Variable: is a letter that represents an unknown number.
 Expression: is any single number or variable combination of operation ( -, +, x, ./.) involving a number.

Rotation, Transformation and Reflection

rotation: to rotate a shape on a grid
Transformation: to move a shape on a strait line on a grid
Reflectio : to make a mirror image

probibility

You get all favoritable outcomes and divide it by all possible outcomes
ex. heads and tails on a coin. you have a 50% chance to get heads
1 out of two

Quadrants

(+,+) quadrant I
(-,+) quadrant II
(-,-) quadrant III
(+,-) quadrant IV

Integers

Positive integers have the same numeral value as a negative integers but have a different sign.
(+) + (+) = (+)
(-) + (-) = (-)
(-) + (+) = it depends which number value is higher
(+) + (-) = it depends which number value is higher

Mean, Median, Mode, Range, Outlier

Mean: add up all the values , divide by how many numbers there are.
Median: the middle number in a data set
Mode: the value that shows up the most
Range:the positive difference between largest and smallest values
Outlier:values that are too big or smallest
values

DIVISIBILITY RULES

Divisibility rules 
1. all numbers
2. all even numbers
3. the sum of the digits is divisible by 3
4. if the number is divisible by two twice
5. any number that ends in o or 5
6. if the number is divisible by 2 and 3 its divisible by six
8. if the number is divisible by 2 thrice 
9. if the sum of the numbers are divisible by 9
10. if number ends in 0

Divisibility rule for 2

all numbers that end in 0, 2, 4 ,6 ,8 ,

Divisibility rule for 5

Any number ending in 5 or 0

0rdering Percent

In order to order percents you have to put the highest number that is closest to 100%
Ex.
50% 75% 85%

ordering decimals

If a decimal has more zeros it means the smaller the fraction is so be smart if you has to pick with was bigger don't pick the one with eight zeros

Ex .


0.50 or 0.000000000000055555

BEDMAS

B.E.D.M.A.S
Brackets
exponents
division
multiplication
addition
subtraction

To solve a b.e.d.m.a.s question you must check brackets going down from there you put those questions in order