Matrices Application

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

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• No Inverse Exists

• 1

• NONE OF THESE

If A is square matrix of order 3 such that |AdjA| =64 , find |A|

• 64

• 8

• 4

• 192

Find the inverse of the matrix

• A

• B

• C

• D

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• No Inverse :(

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• 5   -2
  -3    1
• -5   2
  3   -1
• -5   3
  2   -1
• 1   -3
  -2    5

Determine if the matrix has an inverse, if so find it. It is to your advantage to know how to do this by hand AND by calculator.

• No

• 0 1

  -1 2

• -1 3

  1 -2

• 2 -1

  -1 1

Algebra High cheerleaders are selling sweatshirts for the Football Team. The inventory of sweatshirts as well as sweatshirts sold on A-Days and B-Days are given in the matrices. Which matrix shows the total of sweatshirts sold in each category, color/size, by the cheerleaders?

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Which matrix shows the inventory of sweatshirts remaining after the A-Day sales?

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Which matrix shows the inventory of sweatshirts remaining after the B-Day sales?

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