Matrices

find: B*A

• 47     30
  9     5

• 17     15
  42     35

• 10     25
  7     1

• not possible because rows do not match columns

Find the inverse of the matrix.

• 
• 
• 
• No Inverse Exists

Find the determinant of the matrix

• A

• B

• C

• D

Solve system by using Cramer's Rule. Answers are written in the following form (x,y)

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

What are the dimensions of this matrix?

• 2 x 3

• 3 x 2

• 6 x 1

• 1 x 6

In Matrix R (pictured) what element is in the second row, third column?

• 8

• 9.01

• 6

• 1

What are the dimensions of this matrix?

• 4x3

• 3x4

• 3

• 4

What is a₂₃

• 14

• 4

• 1

• 3