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McGraw-Hill Math Grade 7 Answer Key Lesson 22.4 Tree Diagrams
Exercises
INTERPRET AND CREATE
Question 1.
The tree diagram at the right illustrates the outcomes when you choose two balls from a bag that contains a large number of red, white, and green balls. How many of these outcomes result in you not choosing at least 1 white ball? How many of these outcomes result in you choosing both a red ball and a green ball?
Answer:
4-Red and 2-Green,
Explanation:
Number of outcomes result in not choosing at least 1 white ball,
total there are 9 out comes.
Out of 9 out comes 4 out comes are with out white ball.
Number of outcomes result in choosing both a red ball and a green ball.
Green Red balls and Red and Green balls as shown below.
Question 2.
Draw a tree diagram to describe the following situation: You go to the ice cream store and you have a choice of vanilla, chocolate, or strawberry ice cream. On your ice cream, you can get either nuts or sprinkles.
Answer:
Explanation:
A tree diagram is a tool in the fields of general mathematics, probability, and statistics,
that helps calculate the number of possible outcomes of an event or problem.
The ice cream store have a choice of
vanilla (V) ice cream, chocolate (C) ice cream, or strawberry (S) ice cream.