Review of Matrices

Find the determinant of the matrix

• A

• B

• C

• D

Evaluate the determinant. Type the answer in the space given. (Type the number ONLY.)

Evaluate the determinant. Type the answer in the space given. (Type the number ONLY.)

Multiply

• 20     15    -10
  30     -5         0

• -20      15     -10
  30     -5          0

• 1        8       3
  11     4        5

• 20     -15     10
  -30         5        0  

Find the product of the two matrices.

• 17   12
  25   18

• 8   9
  12   6

• 6   6
  7   5

• 12   10
  10   12

• -5

• 5

• 0

• 2

• 
• 
• 
• 

• A
• B
• C
• D

What is the determinant of matrix A?

• 0

• -16

• 16

• undefined

Find the inverse of the matrix, if it exists.

• singular, no inverse

• 
• 
•