Find the sum.
A. 15.6
B. 14.6
C. 14.4
D. 15.4
Answer: A
Mathematics
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Find the equation of the parabola determined by the given information.Focus at (10, -9), directrix y = -17
A. x = 
y2 + 20y - 108
B. x = 
y2 - 
y + 
C. y = 
x2 - 
x - 
D. y = 
x2 + 
x + 27
Mathematics
Simplify. Write your answer in the form a + bi, where a and b are real numbers.(8 - 
) + (2 + 
)
A. 10 - 13i B. 10 + 13i C. 10 - 5i D. 10 + 5i
Mathematics
Find the vertex, focus, and directrix of the parabola.x2 = 8y
A. vertex: (0, 0)
focus: (-2, 0)
directrix: x = 2
B. vertex: (0, 0)
focus: (2, 0)
directrix: x = -2
C. vertex: (0, 0)
focus: (0, 2)
directrix: y = -2
D. vertex: (0, 0)
focus: (0, -2)
directrix: y = 2
Mathematics
Solve by elimination.x - 
y = 
x + y = - 
A. 
B. 
C. 
D. 
Mathematics