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
Answer: C
Mathematics
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Simplify the expression.
A. -5 B. -5j C. 5 D. 5j
Mathematics
Solve using matrices.x - 5y = -4x + 8y = -4
A. (0, 4) B. (-4, 0) C. (4, 0) D. (0, -4)
Mathematics
Write the shaded area in the figure as a mixed number.
A. 
B. 
C. 
D. 
Mathematics
List the first n terms of the geometric sequence satisfying the given conditions.a1 = 
, r = 4, n = 4
A. 
, 
, 
, 
B. 4, 
, 
, 
C. 
, 
, 
, 
D. 
, 
, 
, 
Mathematics