SOLUTION: I chose C as my answer, but my assignment said it was wrong. Is it D then? Determine the value of the following if it is possible. If it is not possible, explain. A. B.

Question 1161438: I chose C as my answer, but my assignment said it was wrong.
Is it D then?
Determine the value of the following if it is possible. If it is not possible, explain.
A.
B.
C.
D.

The question is provided in the link here: https://i.imgur.com/pM5x2WR.png
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Choice A is false because in the upper left corner, for instance, we have 0 when it should be -6.

Choice B is false because the resulting matrix should be the same size as the original matrix. The resulting matrix must be 2x2.

Choice C is true. You have the correct answer. Each value in this resulting matrix is the result of multiplying the scalar 3 by each entry in the original matrix. It seems like your teacher made a typo.

Choice D is false. It is possible to multiply a scalar with a matrix, as explained above in choice C. One name for this is "scalar matrix multiplication" (in contrast to "matrix multiplication" which refers to multiplying two or more matrices together).

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