Perform the indicated matrix operations.
-Let $\mathrm { A } = \left[ \begin{array} { l l } 1 & 3 \ 2 & 6 \end{array} \right]$ and $\mathrm { B } = \left[ \begin{array} { r r } 0 & 4 \ - 1 & 6 \end{array} \right]$. Find $2 \mathrm {~A} + \mathrm { B }$.

A) $\left[ \begin{array} { l l } 2 & 10 \ 3 & 18 \end{array} \right]$

B) $\left[ \begin{array} { l l } 2 & 10 \ 1 & 12 \end{array} \right]$

C) $\left[ \begin{array} { l l } 2 & 14 \ 2 & 24 \end{array} \right]$

D) $\left[ \begin{array} { r r } 2 & 7 \ 3 & 12 \end{array} \right]$

Question

Perform the indicated matrix operations.
-Let $\mathrm { A } = \left[ \begin{array} { l l } 1 & 3 \ 2 & 6 \end{array} \right]$ and $\mathrm { B } = \left[ \begin{array} { r r } 0 & 4 \ - 1 & 6 \end{array} \right]$. Find $2 \mathrm {~A} + \mathrm { B }$.

A) $\left[ \begin{array} { l l } 2 & 10 \ 3 & 18 \end{array} \right]$

B) $\left[ \begin{array} { l l } 2 & 10 \ 1 & 12 \end{array} \right]$

C) $\left[ \begin{array} { l l } 2 & 14 \ 2 & 24 \end{array} \right]$

D) $\left[ \begin{array} { r r } 2 & 7 \ 3 & 12 \end{array} \right]$

Quizplus · Accepted Answer

First, multiply matrix A by 2: $2A = \left[ \begin{array} { l l } 2 & 6 \ 4 & 12 \end{array} \right]$. Then add matrix B: $\left[ \begin{array} { l l } 2 & 6 \ 4 & 12 \end{array} \right] + \left[ \begin{array} { r r } 0 & 4 \ -1 & 6 \end{array} \right] = \left[ \begin{array} { l l } 2 & 10 \ 3 & 18 \end{array} \right]$.

Perform the Indicated Matrix Operations A=[1326]\mathrm { A } = \left[ \begin{array} { l l } 1 & 3 \\ 2 & 6 \end{array} \right]A=[12​36​]

Perform the Indicated Matrix Operations $\mathrm { A } = \left[ \begin{array} { l l } 1 & 3 \\ 2 & 6 \end{array} \right]$