4.1.1 Matrices and Data − Worksheet
Example 1: 1. Kade, Bo, and Tanner record their ticket-selling activities for a fund-raising carnival. Carnival Ticket Prices Student Single Tickets Ticket Packages Total Collected Kade 39 15 $114 Bo 103 8 $143 Tanner 13 25 $138 a. Display the data in the form of a matrix T .
b. What are the dimensions of T ?
c. What is the entry at t 13 ? What does it represent?
d. What is the address of the entry 143?
Example 2: Use the following matrices for Exercises 2-5. Add or subtract, if possible.
−
1 1.1 6 4 0 1 1 2.3 1
− 0 4 1 0 2 1
1.5 3.8 3 1.2 2.4 0
A
B
C
=
=
=
−
2. A + B
3. B − C
4. B − A
5. B + A
188
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