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College Algebra MA 240 Online Exam 7
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College Algebra MA 240 Online Exam 7/College Algebra MA 240 Online Exam 7
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College Algebra MA 240 Online Exam 7.Question 1 of 40
2.5/ 2.5 Points
Solve the following system of equations using matrices. Use Gaussian elimination with back
substitution or Gauss-Jordan elimination.
2x - y - z = 4
x + y - 5z = -4
x - 2y = 4
A. {(2, -1, 1)}
B. {(-2, -3, 0)}
C. {(3, -1, 2)}
D. {(3, -1, 0)}
Question 2 of 40
2.5/ 2.5 Points
Use Cramer’s Rule to solve the following system.
33769 Online Exam ...
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