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ACT Math Practice Question

Which of the following matrices is equal to $6 \begin{bmatrix} -5 & 3 \\ 0 & -4 \end{bmatrix}$?

  1. A.$\begin{bmatrix} -30 & -6 \end{bmatrix}$
  2. B.$\begin{bmatrix} 1 & 9 \\ 6 & 2 \end{bmatrix}$
  3. C.$\begin{bmatrix} -\frac{5}{6} & \frac{1}{2} \\ 0 & -\frac{2}{3} \end{bmatrix}$
  4. D.$\begin{bmatrix} -30 & 18 \\ 0 & -24 \end{bmatrix}$

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