1.   Use Cramer's rule to find the value of n in the system of equations.


    A. B.
    C. -22 D.
    Hint

  2.   Use Cramer's rule to solve the system of equations.


    A. (0.2, 0.4) B. (0.011, 0.0055)
    C. (0.4, 0.2) D. (-0.4, -0.2)
    Hint

  3.   Solve the system 3x + 2yz = –1, –2x + –3y + 2z = 5, 4xy + 3z = 11.
    A. (2, 4, –2) B. (2, –1, 2)
    C. (1, –1, 2) D. (1, 4, –3)
    Hint

  4.   Solve 2.4x + 1.7y = 8.2, 3.8x – 0.8y = 5.3. Round to the nearest hundredth.
    A. (–1.86, 2.20) B. (–1.86, –2.20)
    C. (1.86, –2.20) D. (1.86, 2.20)
    Hint

  5.   Which method of finding solutions would work best to find the solutions to the system 12.4x – 3.66y = 12.19, 3.9x + 6.17y = 19.28, and why?
    A. Cramer's Rule, because there are fewer calculations.
    B. Cramer's Rule, because none of the other methods will correctly solve the problem
    C. elimination, because 6.17 is a factor of 3.66
    D. elimination, because Cramer's Rule doesn't apply to this problem
    Hint



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