Solve the system of equations using substitution. Note that the system may be inconsistent or consistent with dependent equations.
A. (0, 0)
B. (0, -7)
C. All ordered pairs along x + y = -8
D. No solution
Answer: D
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Using determinants, solve the following for x, y, and z:
x + 2y + z = 3 2x + y + 4z = 10 3x + 4y - z = 7 a. 58 18 7 x = ÄÄ y = ÄÄ z = ÄÄ 16 16 16 b. 58 12 14 x = ÄÄ y = - ÄÄ z = ÄÄ 16 16 16 c. 29 11 14 x = ÄÄ y = - ÄÄ z = ÄÄ 16 16 16 d. 58 20 20 x = ÄÄ y = - ÄÄ z = ÄÄ 16 16 16 e. 29 18 14 x = ÄÄ y = ÄÄ z = ÄÄ 16 16 16
Evaluate the expression 
for each choice of a, b, and c.a = 1, b = 1, c = 8
A. - 
+ 
i
B. 
- 
C. - 
- 
D. 
+ 
i
Solve the equation.x3 + 4x2 + 25x + 100 = 0
A. {-5, 5, -4} B. {4} C. {-4} D. no real solution
Use the information given in the figure.
How many are in set A?
A. 38 B. 27 C. 26 D. 22