Matrices Addition, Subtraction and Multiplication

What are the dimensions (order) of this matrix?

Find B-2A

​ (a)   ​ (b)  

​ (c)   ​ (d)  

​

• 2
• -5
• -13
• 1
• 4
• -1
• 0
• -6
• -10
• -4

Can the operation be performed?

• Yes

• No

Perform the indicated operation.  If it’s not possible, select Not Possible. 

• 7
  -7
  -6
  20
• 7 
  -9
  -6
  20
• Not Possible
• 7
  -9
  2
  20

You can multiply a 2X3 matrix by which matrix?

• 2X2
• 2X12
• 3X12
• 2X3

Subtract the matrices & answer below

​ (a)  

​ (b)  

​ (c)  

​ (d)  

• -9
• 8
• 3
• 2
• -5
• 5
• -8
• 10
• -2

In Matrix R (pictured) , match the element to its value.

• 4

• r₁₂

• 8

• r₃₂

• 2

• r₃₃

• 9.01

• r₂₃

• 6

• r₂₁

What comes first in the order?

• Row
• Column

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

Find the product.

• undefined
• -3   16
  17   12
  8   -10
• 3   12 
  -15  -8
  -1   -3