Solve the system by using the inverse of the coefficient matrix.
-$$\begin{array} { l }
- 3 x - y - 6 z = - 54 \
9 x + 4 y - 7 z = 65 \
2 x - 9 y + z = - 5
\end{array}$$
A) $\{ ( - 9,3,18 ) \}$
B) $\varnothing$
C) $\{ ( 9,3,4 ) \}$
D) $\{ ( 9,4,3 ) \}$

Question

Solve the system by using the inverse of the coefficient matrix.
-$$\begin{array} { l } 
- 3 x - y - 6 z = - 54 \
9 x + 4 y - 7 z = 65 \
2 x - 9 y + z = - 5
\end{array}$$
A) $\{ ( - 9,3,18 ) \}$
B) $\varnothing$
C) $\{ ( 9,3,4 ) \}$
D) $\{ ( 9,4,3 ) \}$

Quizplus · Accepted Answer

The Answer of Solve the system by using the inverse of the coefficient matrix.
-$$\begin{array} { l } 
- 3 x - y - 6 z = - 54 \
9 x + 4 y - 7 z = 65 \
2 x - 9 y + z = - 5
\end{array}$$
A) $\{ ( - 9,3,18 ) \}$
B) $\varnothing$
C) $\{ ( 9,3,4 ) \}$
D) $\{ ( 9,4,3 ) \}$

Solve the System by Using the Inverse of the Coefficient −3x−y−6z=−549x+4y−7z=652x−9y+z=−5\begin{array} { l } - 3 x - y - 6 z = - 54 \\9 x + 4 y - 7 z = 65 \\2 x - 9 y + z = - 5\end{array}−3x−y−6z=−549x+4y−7z=652x−9y+z=−5​

Solve the System by Using the Inverse of the Coefficient $\begin{array} { l } - 3 x - y - 6 z = - 54 \\9 x + 4 y - 7 z = 65 \\2 x - 9 y + z = - 5\end{array}$