Question

What is 3N? A. [-6 09 15]B [1 36 8] C [30 -4 0 9D [-6 03 5]

Answer 1

WE have the matrix

`N=\begin{bmatrix}{-2} & {0} & {} \\ {3} & {5} & {} \\ {} & & \end{bmatrix}_{}`

Then

`\begin{gathered} 3N=3\begin{bmatrix}{-2} & {0} & \\ {3} & {5} & \\ {} & {} & {}\end{bmatrix} \\ =\begin{bmatrix}{3(-2)} & {3(0)} & {} \\ {3(3)} & {3(5)} & {} \\ {} & {} & {}\end{bmatrix} \\ =\begin{bmatrix}{-6} & {0} & {} \\ {9} & {15} & {} \\ {} & {} & \end{bmatrix} \end{gathered}`

Therefore the answer is A.