Find the indicated matrix.
-Let $\mathrm { A } = \left[ \begin{array} { l l } 3 & 3 \ 2 & 5 \end{array} \right]$ and $\mathrm { B } = \left[ \begin{array} { r r } 0 & 4 \ - 1 & 6 \end{array} \right]$. Find $4 \mathrm {~A} + \mathrm { B }$.
A)
$\left[\begin{array}{rr}
12 & 16 \
1 & 11
\end{array}\right]$
B)
$\left[\begin{array}{rr}
12 & 7 \
7 & 11
\end{array}\right]$
C)
$\left[\begin{array}{rr}
12 & 16 \
7 & 26
\end{array}\right]$
D)
$\left[\begin{array}{rr}
12 & 28 \
4 & 4
\end{array}\right]$

Question

Quizplus · Accepted Answer

To find $4 \mathrm {~A} + \mathrm { B }$, first multiply each element of matrix A by 4, resulting in $\left[ \begin{array} { l l } 12 & 12 \ 8 & 20 \end{array} \right]$. Then, add this result to matrix B element-wise: $\left[ \begin{array} { l l } 12+0 & 12+4 \ 8-1 & 20+6 \end{array} \right] = \left[ \begin{array} { l l } 12 & 16 \ 7 & 26 \end{array} \right]$.

Find the Indicated Matrix A=[3325]\mathrm { A } = \left[ \begin{array} { l l } 3 & 3 \\ 2 & 5 \end{array} \right]A=[32​35​]

Find the Indicated Matrix $\mathrm { A } = \left[ \begin{array} { l l } 3 & 3 \\ 2 & 5 \end{array} \right]$