Find the product AB, if possible.
-$A = \left[ \begin{array} { l l l } - 3 & 2 & 9 \end{array} \right] , \quad B = \left[ \begin{array} { r } 7 \ 0 \ - 3 \end{array} \right]$
A) $[ - 48 ]$
B) $[ 183 ]$
C) $\left[ \begin{array} { l l l } - 21 & 0 & - 27 \end{array} \right]$
D)
$\left[\begin{array}{r}
-21 \
0 \
-27
\end{array}\right]$

Question

Quizplus · Accepted Answer

The product $AB$ is calculated by multiplying matrix $A$ by matrix $B$, which results in a single number because $A$ is $1 \times 3$ and $B$ is $3 \times 1$. The calculation is $(-3 \times 7) + (2 \times 0) + (9 \times -3) = -21 - 27 = -48$.

Find the Product AB, If Possible A=[−329],B=[70−3]A = \left[ \begin{array} { l l l } - 3 & 2 & 9 \end{array} \right] , \quad B = \left[ \begin{array} { r } 7 \\ 0 \\ - 3 \end{array} \right]A=[−3​2​9​],B=​70−3​​

Find the Product AB, If Possible $A = \left[ \begin{array} { l l l } - 3 & 2 & 9 \end{array} \right] , \quad B = \left[ \begin{array} { r } 7 \\ 0 \\ - 3 \end{array} \right]$