Question

Please help!

Find the product AB, if possible. Explain if it's not possible.

Answer 1

C

Explanation:

To multiply matrices, the number of columns in the first matrix must equal the number of rows in the second matrix.

Matrix A has 2 columns.

Matrix B has 2 rows.

So the matrices can be multiplied.

Matrix A has 2 rows. Matrix B has 1 column. So the result will also have 2 rows and 1 column.

The first row is (5)(2) + (2)(3) = 16.

The second row is (3)(2) + (-1)(3) = 3.