COURSE TITLE:     Algebra I  

AUTHOR:                 Marilyn McLaughin                        

TOPIC:                     Probability

Performance Objective:       You will determine the probability of certain events. The performance objective is aligned with the MCAS standards.

Math Standard:  Understand and apply basic concepts of probability.

Activity #1:     

Directions:  In this activity you will calculate some simple probability problems. You will also copy definitions about probability into your notebook.  The definitions you will copy  will be available when you log on to the web site in Activity #2.

Activity #2:

Click Here for more on RATIO AND PROPORTION.
http://www.themathpage.com/ARITH/ratio-and-proportion_1.htm

Activity #3:

Example 1:     When you solve ratio and proportion problems, you will set them up as a comparison of two ratios.

                      2   black cats to 6 total cats   =   x   black cats to 78 total cats

                            2       =   x

                           6              78         next,  multiply the cross products,   2 times 78 = 156

                            then divide by the number you haven't used yet, which is the 6 -   156 divided by   6 = 26.

                            Therefore, the ratio of all black cats to a total of  78 cats is 26 black cats.

1.    If  4  out of 10 people have PURPLE hair, how many will have purple hair if there are  75   people?

2.    There are 60 employees at the candy company.  The ratio of females to male employees is  4  to  3.  How many male employees are there?

3.   If three apples cost 87 cents,  how many apples can you buy for $1.15?  

4.    A popular rap group has averaged 2 hit singles for every 15 singles recorded.   They have recorded 90 singles, how many were hits?

5.  The car dealership sells 2 convertibles to every  7 sedans.  Using this ratio, if they sell 1098 sedans, how many convertibles will they sell?

Click here for more on RATIO AND PROPORTION