SOLUTION: I ALREADY ASKED THIS QUESTION, BUT IT GOT MESSED UP THE FIRST TIME I SUBMITTED. For the given matrices below, what is A − 2B? A= [1,1 3, 5] B= [2,4 -3

Algebra ->  Matrices-and-determiminant -> SOLUTION: I ALREADY ASKED THIS QUESTION, BUT IT GOT MESSED UP THE FIRST TIME I SUBMITTED. For the given matrices below, what is A − 2B? A= [1,1 3, 5] B= [2,4 -3      Log On


   

Question 747857: I ALREADY ASKED THIS QUESTION, BUT IT GOT MESSED UP THE FIRST TIME I SUBMITTED.
For the given matrices below, what is A − 2B?
A= [1,1
3, 5]

B= [2,4
-3, 4]
Thank you! Usually I know how to do matrices, but I don't understand what the 2b means?
Thanks.
Found 2 solutions by lynnlo, Alan3354:
Answer by lynnlo(4176) About Me  (Show Source):
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
For the given matrices below, what is A − 2B?
A=
[1,1
3, 5]
B=
[2,4
-3, 4]
---------------
2B is 2 times matrix B
2B =
|+4 8|
|-6 8|
---------
===================
A - 2B =
|-3 -7|
|+9 -3|