# What is the dimension of the matrix #[(17,-2,8,-9,6), (5,11,20,-1,4)]#?

##### 1 Answer

#### Answer:

This is a

#### Explanation:

A matrix is size

A way to remember that the order is "rows, columns" is that it sounds like **Roman columns**.

The given matrix has two rows, which are horizontal, and five columns, which are vertical.

If you're still confused:

#[(color(red)17,color(red)(-2),color(red)8,color(red)(-9),color(red)6),(color(blue)5,color(blue)11,color(blue)20,color(blue)(-1),color(blue)4)]# #{:(" "larr" "color(red)1),(" "larr" "color(blue)2):}#

One row is in red, and the other row is in blue.

The five columns are sorted by color:

#[(color(red)17,color(blue)(-2),color(green)8,color(violet)(-9),color(orange)6),(color(red)5,color(blue)11,color(green)20,color(violet)(-1),color(orange)4)]#

#color(white)[(color(black)uarr,color(black)uarr,color(black)uarr,color(black)uarr,color(black)uarr),(color(red)1,color(blue)2,color(green)3,color(violet)4,color(orange)5)]#