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Use Cramerʹs Rule to Solve the System of Equations xy+5z=174x+z=4x+5y+z=19\begin{array} { r } x - y + 5 z = 17 \\4 x + z = 4 \\x + 5 y + z = 19\end{array}

Question 469

Multiple Choice

Use Cramerʹs rule to solve the system of equations. If D = 0, use another method to determine the solution set.
- xy+5z=174x+z=4x+5y+z=19\begin{array} { r } x - y + 5 z = 17 \\4 x + z = 4 \\x + 5 y + z = 19\end{array}


A) {(4,0,3) }\{ ( 4,0,3 ) \}
B) {(0,3,4) }\{ ( 0,3,4 ) \}
C) Cramer's rule does not apply since D=0\mathrm { D } = 0 ; \varnothing
D) {(4,3,0) }\{ ( 4,3,0 ) \}

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