Hello! Someone please help with this a very short Algebra problem! :)

Question

anonymous · Answer

Is my answer correct or incorrect?

kohai · Answer

Examining :)

anonymous · Answer

Take your time :)

kohai · Answer

Sorry, I just want to be absolutely sure lol, going back over the rules and such. Done in a moment

anonymous · Answer

Haha okay

kohai · Answer

So, no, it's incorrect

kohai · Answer

The directions ask for a matrix that cannot be added OR multiplied, meaning you can't do either to it

anonymous · Answer

Oh I'm not really sure which one it would be then, but my second guess would be C.

kohai · Answer

Yes, you're right.

With adding, you cannot add unless the matrices are the same size.
With multiplying, the the column of the first matrix has to equal the row of the second.

A.) These matrices are the same size, so they can be added.
B.) These matrices are the same size, so they can be added.
C.) The column of the first matrix is not equal to the row of the second, and they aren't the same size.
D.) The column of the first matrix is equal to the row of the second.

So, yes, C.

anonymous · Answer

Thank you for taking the time to help.

kohai · Answer

You're welcome :)