Find the center and radius of the circle.x2 = 16 - (y - 4)2
A. Center: (0, -4); radius: 4
B. Center: (4, 0); radius: 16
C. Center: (0, 4); radius: 4
D. Center: (-4, 0); radius: 16
Answer: C
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Provide an appropriate response.Suppose X is normally distributed with mean 100 and standard deviation 20. Without using tables, determine the approximate value of P(80 < X < 100).
A. 0.50 B. 0.34 C. 0.68 D. 0.95 E. 0.997
Solve the problem.A private airplane leaves an airport and flies due east at 185 mph. Two hours later, a jet leaves the same airport and flies due east at 333 mph. When will the jet overtake the plane?
A. 1
hr
B. 
hr
C. 4
hr
D. 2
hr
Write the complex conjugate of the complex number. Then multiply the number by its complex conjugate.
3-11f What will be an ideal response?
Find the vertex, focus, and directrix of the parabola. Graph the equation.x2 = 16y
A. vertex: (0, 0)
focus: (0, 4)
directrix: y = -4
B. vertex: (0, 0)
focus: (0, -4)
directrix: y = 4
C. vertex: (0, 0)
focus: (-4, 0)
directrix: x = 4
D. vertex: (0, 0)
focus: (4, 0)
directrix: x = -4