Matrices practice

Find the determinant

• 2

• 10

• -2

• 10

There is NO inverse if the determinant equals what value?

• 0

• 1

• -1

Calculate the determinant

• 0
• -15
• -70
• 10

Which of the following are NOT inverse matrices of each other?

• 
• 
• 
• 

Find A+B

• 8     10
  8      1 
• 12     25
  7     1
• 10     30
  0     1
• can't add two together because the rows dont match columns

Which option below correctly shows the steps to find the inverse of this matrix?

• 
• 
• 
• No Inverse Exists

What is A^-1?

• 
• 
• 
• 

Find the determinant of matrix A.

• 10
• not possible
• 14
• -14

Find the value of x that makes the equation true

• $x=7$
  

• $x=19$
  

• 
  

  $x=-\frac{11}{13}$

• $x=-7$

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)}