Question

PROBLEM SET 7.3 1-16 GAUSS ELIMINATION AND BACK SUBSTITUTION Solve the following systems or indicate the nonexistence of solutions. (Show the details of your work.) 1. $5x - 2y = 20.9$ $-x + 4y = -19.3$ 2. $3.0x + 6.2y = 0.2$ $2.1x + 8.5y = 4.3$ 3. $0.5x + 3.5y = 5.7$ $-x + 5.0y = 7.8$ 4. $4y - 2z = 2$ $6x - 2y + z = 29$ $4x + 8y - 4z = 24$ 5. $0.8x + 1.2y - 0.6z = -7.8$ $2.6x + 1.7z = 15.3$ $4.0x - 7.3y - 1.5z = 1.1$ 6. $14x - 2y - 4z = 0$ $18x - 2y - 6z = 0$ $4x + 8y - 14z = 0$ 7. $y + z = -2$ $4y + 6z = -12$ $x + y + z = 2$ 8. $2x + y - 3z = 8$ $5x + 2z = 3$ $8x - y + 7z = 0$ 9. $4y + 4z = 24$ $3x - 11y - 2z = -6$ $6x - 17y + z = 18$

          PROBLEM SET 7.3
1-16 GAUSS ELIMINATION AND BACK
SUBSTITUTION
Solve the following systems or indicate the nonexistence of
solutions. (Show the details of your work.)
1. $5x - 2y = 20.9$
$-x + 4y = -19.3$
2. $3.0x + 6.2y = 0.2$
$2.1x + 8.5y = 4.3$
3. $0.5x + 3.5y = 5.7$
$-x + 5.0y = 7.8$
4.
$4y - 2z = 2$
$6x - 2y + z = 29$
$4x + 8y - 4z = 24$
5. $0.8x + 1.2y - 0.6z = -7.8$
$2.6x + 1.7z = 15.3$
$4.0x - 7.3y - 1.5z = 1.1$
6. $14x - 2y - 4z = 0$
$18x - 2y - 6z = 0$
$4x + 8y - 14z = 0$
7. $y + z = -2$
$4y + 6z = -12$
$x + y + z = 2$
8. $2x + y - 3z = 8$
$5x + 2z = 3$
$8x - y + 7z = 0$
9. $4y + 4z = 24$
$3x - 11y - 2z = -6$
$6x - 17y + z = 18$

PROBLEM SET 7.3
1-16 GAUSS ELIMINATION AND BACK
SUBSTITUTION
Solve the following systems or indicate the nonexistence of
solutions. (Show the details of your work.)
1. 5x - 2y = 20.9
-x + 4y = -19.3
2. 3.0x + 6.2y = 0.2
2.1x + 8.5y = 4.3
3. 0.5x + 3.5y = 5.7
-x + 5.0y = 7.8
4.
4y - 2z = 2
6x - 2y + z = 29
4x + 8y - 4z = 24
5. 0.8x + 1.2y - 0.6z = -7.8
2.6x + 1.7z = 15.3
4.0x - 7.3y - 1.5z = 1.1
6. 14x - 2y - 4z = 0
18x - 2y - 6z = 0
4x + 8y - 14z = 0
7. y + z = -2
4y + 6z = -12
x + y + z = 2
8. 2x + y - 3z = 8
5x + 2z = 3
8x - y + 7z = 0
9. 4y + 4z = 24
3x - 11y - 2z = -6
6x - 17y + z = 18

Added by Michael S.

Question

Please give Ace some feedback