Math 9, Lesson 3, Fall 2019, 9/22/2019
Math 9, Lesson 2, Fall 2019, 9/15/2019
Two events are called to be independent events if the occurrence or non-occurrence of one event does not affect the probability of the other event.
If A and B are independent events, the probability of both events A and B occurring is the product of their individual probabilities:
P(A and B) = P(A) * P(B)
With this, we can simplify tree diagrams when dealing with problems with multiple same items by simply marking their probabilities.
When two (or more) events are dependent to each other, we cannot use the product rule, but we can still use the tree diagrams to help us finding probabilities.
Homework:
Print these pages (pages are links. Click to download): Page 1, Page 2, Page 3
Workbook Page 12, #6 – #10, #16 – #20.
Math 9, Lesson 1, Fall 2019, 9/8/2019,
We start on probability. Students should have learned some basic concepts before about simple probability, the concept of a sample space with events consisting of some outcomes. In this chapter ,we study probabilities with multiple stages.
When a random experiment involves two stages, we can use a rectangular grid, called a probability diagram, to represent the sample space to help us find probabilities.
If a random experiment has two or more stages, we can use a tree diagram to represent the process, which should help us see all the possible outcomes and figure out the outcomes associated with a particular event.
We then talk about mutually exclusive events. In a sample space, two events are mutually exclusive if they cannot occur at the same time. If A and B are two mutually exclusive events, the the probability of A or B occurring is: P(A or B) = P(A) + P(B).
Homework:
Print these pages (pages are links. Click to download): Page 1, Page 2
Workbook Page 11, #1 – #5, #21.
Math 9, Lesson 16, Spring 2019, 6/16/2019
We have our final exam today. As usual, I will email the student test paper along with the answers to you once I have graded them.
Have a great summer!
Math 9, Lesson 15, Spring 2019, 6/9/2019
We have a review today. We will have our final exam next week, the last school day.
Math 9, Lesson 14, Spring 2019, 6/2/2019
Math 9, Lesson 13, Spring 2019, 5/19/2019
We further practice solving logarithm and exponential problems. This is to get students more familiar with using different tools/ways to solve problems.
Homework: Page
13.5.1 – 13.5.5
Math 9, Lesson 12, Spring 2019, 5/12/2019
We continue to study logarithms and we practice using the identities we learned last week.
Homework: Page 1
13.4.1 – 13.4.8
Math 9, Lesson 11, Spring 2019, 5/5/2019
We study the identities of Logarithms. The set of identities will help to simplify many problems. It is important for students to get familiar with them, by practicing them.
Homework: Page 1
13.3.1 – 13.3.6
