Mathematics Linear Algebra Quiz
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Questions and Answers

What is the resulting element at position (1,2) for the matrix $3A - 28$?

  • 0
  • -9 (correct)
  • 9
  • 1
  • What is the first step in calculating $3A$?

  • Subtract 3 from each element of A
  • Multiply each element of A by 3 (correct)
  • Add 3 to each element of A
  • Divide each element of A by 3
  • What does the operation $3A - 28$ represent mathematically?

  • Dividing $3A$ by 28
  • Subtracting 28 from each element of $3A$ (correct)
  • Multiplying each element of $3A$ by 28
  • Adding 28 to each element of $3A$
  • What is the resulting matrix structure for $3A$ if A is a $3 imes 3$ matrix?

    <p>A $3 imes 3$ matrix</p> Signup and view all the answers

    What will be the value of the first element after the operation $3A - 28$?

    <p>-16</p> Signup and view all the answers

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