THURSDAY, MAY 3RD •Write Down Math Homework•Complete warm-up

1.Solve: 15=5 - 10x

2. The letters EVANS PEZZINO were put in a bag. Two letters were chosen without replacement. Find P(vowel, not vowel)

Warm up

ATTENTION ATTENTION

Checkpoint TOMORROW

PRACTICE

Independent &

Dependent Events

Tree Diagrams

Finding outcomes……

•All outcomes are listed on the RIGHT/VERY BOTTOM•A tree diagram is a way to show all of the possible outcomes.

I have a photo of Sidney that I want to mat and frame. I can choose from a blue, purple, red, or green mat and a metal or wood frame. Describe all of the ways I could frame this photo with one mat and one frame.

You can find all of the possible outcomes by

making a tree diagram.

Example #1

• Each “branch” of the tree diagram represents a different way to frame the photo.

• The ways shown in the branches could be written as (blue, metal), (blue, wood), (purple, metal), (purple, wood), (red, metal), (red, wood), (green, metal), and (green, wood).

The Tree Diagram

A baker can make yellow or white cakes with a choice of chocolate, strawberry, or vanilla icing. Describe all of the possible combinations of cakes.

YOU TRY!

The different cake possibilities are (yellow, chocolate), (yellow, strawberry), (yellow, vanilla), (white, chocolate), (white, strawberry), and (white, vanilla).

white cakeyellow cake

chocolate icing

vanilla icing

strawberry icing

chocolate icing

vanilla icing

strawberry icing

Tree Branch

METHOD #2 COUNTING PRINCIPLE

License plates are being produced that have a single letter followed by three digits. All license plates are equally likely.

Find the number of possible license plates.Use the Fundamental Counting Principal.

letter first digit second digit third digit

26 choices10 choices 10 choices 10 choices26 • 10 • 10 • 10 = 26,000

The number of possible 1-letter, 3-digit license plates is 26,000.

Example #1

YOU TRY!1. Employee ID codes at the mall

contain 2 letters followed by 3 digits. Find the number of Possible ID Codes.

The Fundamental Counting Principle tells you only the number of

outcomes in some experiments, not what the outcomes are. A tree

diagram is a way to show all of the possible outcomes.

CLASSWORKComplete Practice A Counting Principals