Chapter 9: Problem 54
Graph each compound inequality. \(x+3 y \geq 3\) or \(x \geq-2\)
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Chapter 9: Problem 54
Graph each compound inequality. \(x+3 y \geq 3\) or \(x \geq-2\)
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Write a system of linear equations in \(x, y,\) and \(z\) represented by each augmented matrix. $$\left[\begin{array}{rrr|r}1 & -3 & 2 & 7 \\\4 & -1 & 3 & 0 \\\\-2 & 2 & -3 & -9\end{array}\right]$$
Write a system of linear equations in \(x, y,\) and \(z\) represented by each augmented matrix. $$\left[\begin{array}{rrr|r}1 & 4 & -7 & -11 \\\0 & 1 & 3 & -1 \\\0& 0 & 1 & 6\end{array}\right]$$
Graph each compound inequality. \(2 x-3 y<-9\) and \(x+6 y<12\)
Solve each inequality. Graph the solution set and write the answer in interval notation. $$|q-7|>12$$
Solve each system using Gaussian elimination. $$\begin{array}{l}x+y-z=-5 \\\4 x+5 y-2 z=0 \\\8 x-3 y+2 z=-4\end{array}$$
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