Perform the indicated operation, if possible.
-$\left[ \begin{array} { r } 3 \ - 2 \ - 4 \end{array} \right] + \left[ \begin{array} { r } - 5 \ 5 \ 8 \end{array} \right]$

A)
$\left[ \begin{array} { r r } 3 & - 5 \ - 2 & 5 \ - 4 & 8 \end{array} \right]$
B)
$\left[ \begin{array} { l l l } - 2 & 3 & 4 \end{array} \right]$
C)
$\left[ \begin{array} { l } 2 \ 4 \ 5 \end{array} \right]$
D)
$\left[ \begin{array} { r } - 2 \ 3 \ 4 \end{array} \right]$

Question

Perform the indicated operation, if possible.
-$\left[ \begin{array} { r } 3 \ - 2 \ - 4 \end{array} \right] + \left[ \begin{array} { r } - 5 \ 5 \ 8 \end{array} \right]$

A)
$\left[ \begin{array} { r r } 3 & - 5 \ - 2 & 5 \ - 4 & 8 \end{array} \right]$
B)
$\left[ \begin{array} { l l l } - 2 & 3 & 4 \end{array} \right]$
C)
$\left[ \begin{array} { l } 2 \ 4 \ 5 \end{array} \right]$
D)
$\left[ \begin{array} { r } - 2 \ 3 \ 4 \end{array} \right]$

Quizplus · Accepted Answer

To add two matrices (or vectors in this case), you add their corresponding elements. Thus, $3 + (-5) = -2$, $-2 + 5 = 3$, and $-4 + 8 = 4$.

Perform the Indicated Operation, If Possible [3−2−4]+[−558]\left[ \begin{array} { r } 3 \\ - 2 \\ - 4 \end{array} \right] + \left[ \begin{array} { r } - 5 \\ 5 \\ 8 \end{array} \right]​3−2−4​​+​−558​​

Perform the Indicated Operation, If Possible $\left[ \begin{array} { r } 3 \\ - 2 \\ - 4 \end{array} \right] + \left[ \begin{array} { r } - 5 \\ 5 \\ 8 \end{array} \right]$