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20 POINTS PLZ HELP

Select the correct answer from the drop-down menu.


The order of matrix A + B is __.

20 POINTS PLZ HELP Select the correct answer from the drop-down menu. The order of-example-1
User Gaby Solis
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2 Answers

2 votes

Answer:

last one 4 x 1

Explanation:

Order of the matrices must be the same in order to add them up

Adding matrices mean adding corresponding elements together

Order of matrix is 4 rows and 1 column

User Igor Voynov
by
8.1k points
3 votes

Answer:

4 x 1 ( 4 rows and one column)

Explanation:

Recall the definition for order of a matrix: The number of rows times the number of columns.

So, in this case, we are adding matrix A which is 4 rows and 1 column to matrix B which is also of 4 rows and one column, obtaining a third matrix that has also 4 rows and one column:


\left[\begin{array}{cccc}-9\\0\\3\\-1\end{array}\right] +\left[\begin{array}{cccc}0\\4\\-6\\2\end{array}\right] =\left[\begin{array}{cccc}-9\\4\\-3\\1\end{array}\right]

The resultant A + B is also of 4 rows and one column

User ForTruce
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