Perform the operation or operations when possible.
-$\left[ \begin{array} { l l } 1 & 4 \end{array} \right] + \left[ \begin{array} { r } - 1 \ 9 \end{array} \right]$
A) They cannot be added.
B)
$$\left[ \begin{array} { r r }
1 & - 1 \
4 & 9
\end{array} \right]$$
C)
$\left[ \begin{array} { l l } 0 & 13 \end{array} \right]$
D)
$\left[\begin{array}{r}
0 \
13
\end{array}\right]$

Question

Perform the operation or operations when possible.
-$\left[ \begin{array} { l l } 1 & 4 \end{array} \right] + \left[ \begin{array} { r } - 1 \ 9 \end{array} \right]$
A) They cannot be added.
B)
$$\left[ \begin{array} { r r } 
1 & - 1 \
4 & 9
\end{array} \right]$$
C)
$\left[ \begin{array} { l l } 0 & 13 \end{array} \right]$
D)
$\left[\begin{array}{r}
0 \
13
\end{array}\right]$

Quizplus · Accepted Answer

Matrix addition requires that both matrices have the same dimensions. The first matrix is 1x2 and the second is 2x1, so they cannot be added together.

Perform the Operation or Operations When Possible [14]+[−19]\left[ \begin{array} { l l } 1 & 4 \end{array} \right] + \left[ \begin{array} { r } - 1 \\ 9 \end{array} \right][1​4​]+[−19​]

Perform the Operation or Operations When Possible $\left[ \begin{array} { l l } 1 & 4 \end{array} \right] + \left[ \begin{array} { r } - 1 \\ 9 \end{array} \right]$