Alg2 Unit 10 Matrices Review

What is the birthstone for February?

• Garnet
• Opal
• Amethyst
• Topaz

• 3

• 6

• 2

• 4

Is the sum defined?

• Yes, matrices can always be added

• No, because the matrices do not have the same dimensions

• No, because you cannot add positive and negative numbers

• Yes, the answer is 3

If Matrix A has dimensions 3x7 and Matrix B has dimensions 7x8, then what are the dimensions of Matrix AB?

• 7x7

• 3x7

• 3x8

• 7x8

The word February is believed to have derived from the name 'Februa' taken from the Roman 'Festival of __________'

• Love

• Purification

• Gratitude

• Death

• 10 3

  -3 8

  14 2

• 4 3

  -3 8

  8 7

• -21 0

  -40 -9

  33 8

• 10 3

  13 10

  14 2

• 15 15

  0 36

• 2 -8

  -3 9

• -15 15

  0 -36

• -15 -15

  0 -36

Dimensions?

• 1x4

• 2x2

• 4x1

• 3x1

Groundhog Day began based on a ________ superstition.

• Roman

• French

• American

• German

• 10

• -7

• 7

• -10