Find 3A. $$A = \left[ \begin{array} { c c }
5 & - 2 \
2 & 3 \
- 3 & 5
\end{array} \right]$$
A) $$\left[ \begin{array} { c c }
15 & - 6 \
6 & 9 \
- 9 & 15
\end{array} \right]$$
B) $$\left[ \begin{array} { c c }
17 & - 6 \
6 & 15 \
- 9 & 9
\end{array} \right]$$
C) $$\left[ \begin{array} { c c }
19 & - 6 \
- 9 & 9 \
6 & 15
\end{array} \right]$$
D) $$\left[ \begin{array} { c c }
13 & 9 \
6 & - 6 \
- 9 & 15
\end{array} \right]$$
E) $$\left[ \begin{array} { c c }
11 & - 6 \
9 & 6 \
- 9 & 15
\end{array} \right]$$

Question

Find 3A.​ $$A = \left[ \begin{array} { c c } 
5 & - 2 \
2 & 3 \
- 3 & 5
\end{array} \right]$$ ​
A) $$\left[ \begin{array} { c c } 
15 & - 6 \
6 & 9 \
- 9 & 15
\end{array} \right]$$
B) $$\left[ \begin{array} { c c } 
17 & - 6 \
6 & 15 \
- 9 & 9
\end{array} \right]$$
C) $$\left[ \begin{array} { c c } 
19 & - 6 \
- 9 & 9 \
6 & 15
\end{array} \right]$$
D) $$\left[ \begin{array} { c c } 
13 & 9 \
6 & - 6 \
- 9 & 15
\end{array} \right]$$
E) $$\left[ \begin{array} { c c } 
11 & - 6 \
9 & 6 \
- 9 & 15
\end{array} \right]$$

Quizplus · Accepted Answer

To find $3A$, multiply each element of matrix $A$ by 3. The correct matrix is $\left[ \begin{array} { c c } 15 & -6 \ 6 & 9 \ -9 & 15 \end{array} \right]$.

Find 3A​ A=[5−223−35]A = \left[ \begin{array} { c c } 5 & - 2 \\2 & 3 \\- 3 & 5\end{array} \right]A=​52−3​−235​​

Find 3A $A = \left[ \begin{array} { c c } 5 & - 2 \\2 & 3 \\- 3 & 5\end{array} \right]$