Basic Matrix Operations

Find D + E.

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• Not possible

Find 5A.

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Find 0A.

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• Not this one

• Not this one either

• Try another one

Perform the matrix operation.

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Use what you know about matrix equality to solve for the variables.

• x = 4

  y = 2

  z = 3

• x = 16

  y = 8

  z = 3

• Not possible

Use what you know about matrix equality to find r, s, and t.

• r = -8

  s = 6

  t = -9

• r = -36

  s = -3

  t = -63

• No solution

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Find B-A

• -3     1
  7     -1

• 1     0
  1     -4

• 4       0
  -6     0

• not possible because rows do not match columns

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

• 8

• 9.01

• 6

• 1