Operations with Matrices Quick Check
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Question
Add matrix M and matrix N.
M=⎡⎣⎢124−9⎤⎦⎥ N=⎡⎣⎢872⎤⎦⎥
(1 point)
Responses
M+N=[2011 −7]
upper M plus upper N equals Start 1 by 3 Matrix 1st Row 1st Column 20 2nd Column 11 3rd Column negative 7 End Matrix
M+N=[1284 7−92]
upper M plus upper N equals Start 2 by 3 Matrix 1st Row 1st Column 12 2nd Column 4 3rd Column negative 9 2nd Row 1st Column 8 2nd Column 7 3rd Column 2 End Matrix
M+N=⎡⎣⎢2011−7⎤⎦⎥
upper M plus upper N equals Start 3 by 1 Matrix 1st Row 1st Column 20 2nd Row 1st Column 11 3rd Row 1st Column negative 7 End Matrix
M+N=⎡⎣⎢124−9872⎤⎦⎥
upper M plus upper N equals Start 3 by 2 Matrix 1st Row 1st Column 12 2nd Column 8 2nd Row 1st Column 4 2nd Column 7 3rd Row 1st Column negative 9 2nd Column 2 End Matrix
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M+N=[1284 7 −9]
Explanation: To add two matrices, simply add the corresponding elements together. In this case, the sum would be:
[1+8 2+7 4+(−9)] = [9 9 −5]
So, the correct response is M+N=[1284 7 −9].