Solve the system of equations using Cramer's rule. x - 4y - 2z = -29 -3x + y + z = -6-2x + 4y - z = 21
A. (8, 1, 5)
B. (5, 1, 8)
C. (5, 8, 1)
D. (-5, 8, 10)
Answer: C
Mathematics
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Factor.8x3 + 18x2 + 9x
A. (8x2 + 3)(x + 3) B. x(2x + 3)(4x + 3) C. x(8x + 1)(x + 9) D. x(2x - 3)(4x - 3)
Mathematics
Simplify the given expression.
(y + 9) + 10y
A. 
y + 45
B. 5y - 45
C. 5y + 45
D. 
y - 45
Mathematics
Use a graphing calculator to approximate the vertex of the graph of the parabola defined by the following equation.y = -5x2 - 4x + 6
A. (0.4, 6.8) B. (-0.4, 5.2) C. (-0.4, 6.8) D. (2, 6.8)
Mathematics
Solve the equation.6253x - 3 = 31255x
A. 
B. 
C. 
D. 
Mathematics