Add, Subtract & Multiply Matrices

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

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

• r₂₃

• 6

• r₃₃

• 8

• r₃₂

• 9.01

• r₂₁

• 2

• r₁₂

What comes first in the order?

• Row
• Column

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

What is the value of element a₂₃?

Find 3B - 2A

• [22 25]

  [17 3]

• [14 5]

  [-11 3]

• [-14 5]

  [11 -3]

• none of these