HW Feb 22 (2A) Matrices Practice

Find the determinant of the following matrix.

• 129

• -129

• 81

• -81

Find the determinant of the following matrix.

• -12

• -10

• 12

• 10

Find the determinant of the following matrix.

• -41

• 71

• 41

• -53

Using determinants, find the area of the triangle whose vertices are (0, 0), (4, 3) and (8, 0).

• 12

• 21

• 24

• NONE OF THE ABOVE

Find the inverse, if it exists.

Evaluate responses using AI:

OFF

Determine whether the matrices are multiplicative inverses.

• Yes
• No
• Elevator
• Pi

Determine whether the matrices are multiplicative inverses.

• Yes
• No
• Workout
• Valut-Tech

What is the inverse of this matrix?

• _{(1/25)  (-4/25)
  (3/25)  (13/25)}
• _{(1/5)  (-4/5)
  (3/5)  (13/5)}
• _{(6/25)  (-2/25)
  (2/25)  (9/25)}
• _{(1/150)  (-4/150)
  (3/150)  (13/150)}