Solve the system of four equations in four unknowns using matrices.
-$$\begin{aligned} x+y+z & =7500 \
X-z & =-500 \
0)04 x+0.03 y+0.02 z & =220
\end{aligned}$$
A) $(2000,3500,2000)$
B) $(1500,5000,1000)$
C) $(1000,4000,1500)$
D) $(1500,4000,2000)$

Question

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The Answer of Solve the system of four equations in four unknowns using matrices.
-$$\begin{aligned} x+y+z & =7500 \
X-z & =-500 \
0)04 x+0.03 y+0.02 z & =220
\end{aligned}$$
A) $(2000,3500,2000)$
B) $(1500,5000,1000)$
C) $(1000,4000,1500)$
D) $(1500,4000,2000)$

Solve the System of Four Equations in Four Unknowns Using x+y+z=7500X−z=−5000)04x+0.03y+0.02z=220\begin{aligned} x+y+z & =7500 \\X-z & =-500 \\0)04 x+0.03 y+0.02 z & =220\end{aligned}x+y+zX−z0)04x+0.03y+0.02z​=7500=−500=220​

Solve the System of Four Equations in Four Unknowns Using $\begin{aligned} x+y+z & =7500 \\X-z & =-500 \\0)04 x+0.03 y+0.02 z & =220\end{aligned}$