Answer:
a. AB: 3 by 7
b. BA: N by N
c. A^TB: N by N
d. BC: 6 by 3
Step-by-step explanation:
Given



Required
The dimension of the following matrices
As a general rule:
For A * B to be successful, the columns in a must equal the rows in B
Using this rule, we have:

So:




The column numbers of B does not equal the row numbers of A.
Hence, BA does not exist

implies that:
If
, then

So:

The column numbers of A^T does not equal the row numbers of B.
Hence,
does not exist


You have to multiple and divide
Answer:
Step-by-step explanation:
a. it takes 9 minutes for the robot to complete one task
b. In one hour then robot can complete 6.7 tasks however since you reallly cant quantify .7 tasks the robot can only complete 6 tasks
Answer:
yes, correct
Step-by-step explanation:
6c - 48 = 6*c - 6 *8
= 6* (c-8)