Respuesta :

[tex]a_{1,3} = 9[/tex]

Step-by-step explanation:

The elements of matrices are represented in the form

[tex]a_{r,c}[/tex]

Here r is the row number and c is the column number.

Given matrix is:

[tex]A = \left[\begin{array}{ccc}3&6&9\\2&4&8\end{array}\right][/tex]

The elements of matrix will be represented by a_{r,c}

We have to find [tex]a_{1,3}[/tex]

Which means that the first row and third column.

The first row is: 3   6    9 and the element in third column is: 9

So,

[tex]a_{1,3} = 9[/tex]

Keywords: Matrices, Elements

Learn more about matrices at:

  • brainly.com/question/10541435
  • brainly.com/question/10666510

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