Rationalize the denominator. Assume all variables have positive values.
A. 
B. 
C. 54
D. 5
Answer: B
Mathematics
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Determine the vertex, focus, and directrix of the parabola and sketch its graph.y2 = 12x
A. vertex: (0, 0)
focus: (-3, 0)
directrix: x = 3
B. vertex: (0, 0)
focus: (0, 3)
directrix: y = -3
C. vertex: (0, 0)
focus: (0, 3)
directrix: y = -3
D. vertex: (0, 0)
focus: (3, 0)
directrix: x = -3
Mathematics
Find the Social Security tax for the current pay period. Assume a 6.2% FICA rate up to a maximum of $110,000.Gross Earnings This Year: $101,218.11Current Period Earnings: $7021
A. $-109.18 B. $538.28 C. $435.30 D. $544.48
Mathematics
Use n = 4 to approximate the value of the integral by the trapezoidal rule.
A. 
B. 
C. 
D. 
Mathematics
Use the quadratic formula to solve the quadratic equation.7 - x2 = 8x
A. 4 + 
B. -4 ± 
C. -4 ± 2
D. -1 ± 
Mathematics