Use the matrix capabilities of a graphing utility to evaluate the expression.Round your results to three decimal places,if necessary. $$55 \left( \left[ \begin{array} { c c }
12 & - 18 \
- 17 & 19
\end{array} \right] + \left[ \begin{array} { c c }
- 21 & 13 \
15 & 14
\end{array} \right] \right)$$
A) $$\left[ \begin{array} { c c }
- 495 & - 275 \
- 110 & 1815
\end{array} \right]$$
B) $$\left[ \begin{array} { l l }
- 493 & - 275 \
1815 & - 110
\end{array} \right]$$
C) $$\left[ \begin{array} { c c }
- 491 & 1815 \
- 110 & - 275
\end{array} \right]$$
D) $$\left[ \begin{array} { c c }
- 497 & - 110 \
- 275 & 1815
\end{array} \right]$$
E) $$\left[ \begin{array} { c c }
- 499 & - 275 \
- 110 & 1815
\end{array} \right]$$

Question

Use the matrix capabilities of a graphing utility to evaluate the expression.Round your results to three decimal places,if necessary.​ $$55 \left( \left[ \begin{array} { c c } 
12 & - 18 \
- 17 & 19
\end{array} \right] + \left[ \begin{array} { c c } 
- 21 & 13 \
15 & 14
\end{array} \right] \right)$$ ​
A) $$\left[ \begin{array} { c c } 
- 495 & - 275 \
- 110 & 1815
\end{array} \right]$$
B) $$\left[ \begin{array} { l l } 
- 493 & - 275 \
1815 & - 110
\end{array} \right]$$
C) $$\left[ \begin{array} { c c } 
- 491 & 1815 \
- 110 & - 275
\end{array} \right]$$
D) $$\left[ \begin{array} { c c } 
- 497 & - 110 \
- 275 & 1815
\end{array} \right]$$
E) $$\left[ \begin{array} { c c } 
- 499 & - 275 \
- 110 & 1815
\end{array} \right]$$

Quizplus · Accepted Answer

First, add the matrices: $\left[ \begin{array} { c c } 12 & -18 \ -17 & 19 \end{array} \right] + \left[ \begin{array} { c c } -21 & 13 \ 15 & 14 \end{array} \right] = \left[ \begin{array} { c c } -9 & -5 \ -2 & 33 \end{array} \right]$. Then, multiply by 55 to get $\left[ \begin{array} { c c } -495 & -275 \ -110 & 1815 \end{array} \right]$.

Use the Matrix Capabilities of a Graphing Utility to Evaluate