Evaluate.ab, when a = 2 and b = -8
A. -8
B. 18
C. -16
D. -18
Answer: C
Mathematics
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Solve the quadratic equation by factoring.5x2 = -6x - x3
A. x = 3, 2 B. x = 0, 3, 2 C. x = -3, -2 D. x = 0, -3, -2
Mathematics
Find an equation of a parabola satisfying the given conditions.Focus (0, 10), directrix y = -10
A. y2 = 10x B. y2 = 40x C. x2 = 10y D. x2 = 40y
Mathematics
Solve the system of equations using substitution. Note that the system may be inconsistent or consistent with dependent equations.
A. (8, -12) B. (-8, 12) C. All ordered pairs along 2x + y = 4 D. No solution
Mathematics
Find the x-intercepts of the graph of each equation.y = 7x2 - 34x - 5
A. 
, (5, 0)
B. (-7, 0), (5, 0)
C. 
, 
D. 
, (7, 0)
Mathematics