Find the focus and directrix of the parabola with the given equation.x2 = 36y
A. focus: (0, 9)
directrix: y = -9
B. focus: (0, -9)
directrix: x = -9
C. focus: (9, 0)
directrix: y = 9
D. focus: (9, 0)
directrix: x = 9
Answer: A
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Solve using Cramer's Rule.Jerry has 3 pieces of string. The total length is 102 inches. The sum of the two longer pieces is 83. The middle piece is twice as long as the shortest piece. What are the lengths of the 3 pieces?
A. 19, 45, and 55 inches B. 19, 38, and 45 inches C. 9.5, 19, and 73.5 inches D. No solution
Rewrite the expression without absolute value bars.
A. 1 B. -1 C. 19 D. -19
Find the vertices and foci of the hyperbola.
- 
= 1
A. Vertices: (4, 14), (4, -4); Foci: (4, 20), (4, -10) B. Vertices: (4, 17), (4, -7); Foci: (4, -7), (4, 17) C. Vertices: (14, 4), (-4, 4); Foci: (20, 4), (-10, 4) D. Vertices: (17, 4), (-7, 4); Foci: (-7, 4), (17, 4)
Match the numerical model to the corresponding model.
A. y = 
B. y = 
C. y = 
D. y = 