Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 3 Linear Systems and Matrices - 3.6 Multiplying Matrices - 3.6 Exercises - Skill Practice - Page 199: 6

Answer

$AB$ is defined, and it has $1\times3$ dimensions

Work Step by Step

We can get the $1\times3$ dimensions by looking at the number of rows that matrix $A$ has and the number of columns that matrix $B$ has.
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