Multiply Matrices

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

Find the product.

• undefined
• -3   16
  17   12
  8   -10
• 3   12 
  -15  -8
  -1   -3

These matrices are being multiplied. Determine the dimension/size of the new matrix. 

• Can't multiply them
• 4  x  2
• 3  x  3
• 4  x  3

Find the product of the two matrices.

• 1   2
  6   -8
• -3   -5
  -5   -11
• -2     8
  -6   -12
• 2  -3
  5   -2

Can the operation be performed?

• Yes
• No
• tomato
• Maybe

Find the product of the matrices.

• A
• B
• C
• D

Multiply.

• A

• B

• C

• D

Multiply.

• A

• B

• C

• D

Can the operation be performed?

• Yes

• No

Determine the dimensions of the product matrix.

• 3x3

• 2x2

• 3x2

• 2x3