Solving Matrices

What is the solution to the 4x5 Matrix?

• ( 3, 4, 9, 6 )

• ( 3, 4, 9, -6 )

• ( -6, 9, 4, 3 )

• ( 6, 9, 4, 3 )

What is the determinant of this matrix?

• 5

• -5

• 0

• -12

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

• 198

• 162

• -333

• -9

What do w, x, y and z equal in this matrix equation?

• w = 13, x = 4, y = 7, z = 23

• w = 13, x = -4, y = 11, z = 23

• w = 13, x = 4, y = 11, z = 23

• w = 13, x = 4, y = 11, z = 17

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Find 3B - 2A

• [22 25]

  [17 3]

• [14 5]

  [-11 3]

• [-14 5]

  [11 -3]

• none of these

Let A be square matrix of order 3 X 3. Write the value of|2𝐴|, where |𝐴| = 4

• 8

• 16

• 24

• 32