Question

Evaluate: 5[1 9 2 -6]

Answer 1

I'm assuming this is a matrix

Answer 2

if so, then you multiply the 5 by each number inside the matrix

Answer 3

Example:
\[\Large
7*\begin{bmatrix}
8 & 5\\
2 & -3
\end{bmatrix}
=
\begin{bmatrix}
7*8 & 7*5\\
7*2 & 7*(-3)
\end{bmatrix}
=
\begin{bmatrix}
56 & 35\\
14 & -21
\end{bmatrix}
\]
This is NOT the answer to your question as it's just an example

Answer 4

so:
5*1=5
5*9=45
5*2=10
5*(-6)=-30

Answer 5

Then the answer would be: [5 45 10 -30] ??? @jim_thompson5910

Answer 6

that looks good

Answer 7

thank you for helping me understand the concepts of matrix for multiplication

Answer 8

you're welcome

this is really called "scalar multiplication" or "multiplying a matrix by a scalar"

because the 5 outside is the scalar (a single number)
the matrix is the collection of numbers (the nonscalar)

Answer 9

matrix multiplication is some other concept you'll get to