AMDM: Matrices Basics (dimensions/add/subtract)

What are the dimensions (order) of this matrix?

Can the operation be performed?

• Yes

• No

Tags

CCSS.HSN.VM.C.8

Subtract the matrices & answer below

​ (a)  

​ (b)  

​ (c)  

​ (d)  

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

Tags

CCSS.HSN.VM.C.8

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

• 8

• r₁₂

• 9.01

• r₂₃

• 4

• r₃₃

• 6

• r₃₂

• 2

• r₂₁

What comes first in the dimensions (a.k.a. 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?

What is the name of each entry of a matrix?

• Row
• Element
• Dimension
• Rectangle

How many rows are in a 7 x 3 matrix?

• 7
• 3
• 21
• 10

In Matrix R (pictured) what is the value of element R_3,2

• 8
• 9.01
• 6
• 1