Inverse and Determinant of Matrices

Are A and B inverses? 
A = ⌈3  -10⌉
        ⌊1      4⌋
B = ⌈2/11  5/11⌉
         ⌊-1/22   3/22⌋
*AB=I

• Yes

• No

Solve for the determinant of the following matrix:  
⌈12  −3⌉
⌊−6  15⌋
*detA= ad-bc

• 198

• 162

• -333

• -9

Evaluate the determinant of the matrix.

• -21

• 0

• 9

• 12

Evaluate the determinant of the matrix.

• -21

• 0

• 9

• 12

Determine whether the matrices are multiplicative inverses.

• Yes

• No

• Elevator

• Pi

Determine whether the matrices are multiplicative inverses.

• Yes

• No

• Workout

• Valut-Tech

Determine if the matrix has an inverse, if so find it.

• No

•  0   1
  -1   2

• -1   3
    1   -2

•   2   -1
  -1   1

Determine if the matrix has an inverse, if so find it.

• No

•  0   1
  -1   2

• -1   3
    1   -2

•   2   -1
  -1   1