Perform the indicated operation.
-Let $\mathrm { A } = \left[ \begin{array} { r r r } - 4 & 2 & 5 \ 6 & - 1 & 6 \ - 4 & 7 & 7 \end{array} \right]$ and $\mathrm { B } = \left[ \begin{array} { r r r } 1 & - 4 & 4 \ 5 & 3 & 2 \ - 9 & 6 & 7 \end{array} \right]$. Find $\mathrm { A } + \mathrm { B }$.

A) $\left[ \begin{array} { l r r } - 2 & - 3 & 9 \ 11 & 2 & 8 \ - 13 & 13 & 14 \end{array} \right]$

B) $\left[ \begin{array} { l r r } - 3 & - 2 & 9 \ 11 & 2 & 8 \ - 13 & 13 & 14 \end{array} \right]$

C) $\left[ \begin{array} { l r r } - 3 & - 2 & 9 \ 11 & 2 & 8 \ - 13 & 14 & 13 \end{array} \right]$

D) $\left[ \begin{array} { l r r } - 3 & - 2 & 9 \ 11 & - 4 & 8 \ - 13 & 13 & 14 \end{array} \right]$

Question

Perform the indicated operation.
-Let $\mathrm { A } = \left[ \begin{array} { r r r } - 4 & 2 & 5 \ 6 & - 1 & 6 \ - 4 & 7 & 7 \end{array} \right]$ and $\mathrm { B } = \left[ \begin{array} { r r r } 1 & - 4 & 4 \ 5 & 3 & 2 \ - 9 & 6 & 7 \end{array} \right]$. Find $\mathrm { A } + \mathrm { B }$.

A) $\left[ \begin{array} { l r r } - 2 & - 3 & 9 \ 11 & 2 & 8 \ - 13 & 13 & 14 \end{array} \right]$

B) $\left[ \begin{array} { l r r } - 3 & - 2 & 9 \ 11 & 2 & 8 \ - 13 & 13 & 14 \end{array} \right]$

C) $\left[ \begin{array} { l r r } - 3 & - 2 & 9 \ 11 & 2 & 8 \ - 13 & 14 & 13 \end{array} \right]$

D) $\left[ \begin{array} { l r r } - 3 & - 2 & 9 \ 11 & - 4 & 8 \ - 13 & 13 & 14 \end{array} \right]$

Quizplus · Accepted Answer

To find A + B, add corresponding elements of matrices A and B. The resulting matrix is $\left[ \begin{array} { l r r } - 3 & - 2 & 9 \ 11 & 2 & 8 \ - 13 & 13 & 14 \end{array} \right]$.

Perform the Indicated Operation A=[−4256−16−477]\mathrm { A } = \left[ \begin{array} { r r r } - 4 & 2 & 5 \\ 6 & - 1 & 6 \\ - 4 & 7 & 7 \end{array} \right]A=​−46−4​2−17​567​​

Perform the Indicated Operation $\mathrm { A } = \left[ \begin{array} { r r r } - 4 & 2 & 5 \\ 6 & - 1 & 6 \\ - 4 & 7 & 7 \end{array} \right]$