Find the focus and directrix of the parabola with the given equation.x2 = 40y
A. focus: (0, 10)
directrix: y = -10
B. focus: (0, -10)
directrix: x = -10
C. focus: (10, 0)
directrix: y = 10
D. focus: (10, 0)
directrix: x = 10
Answer: A
You might also like to view...
Write an expression for the general or nth term, an, of the arithmetic sequence.-5, 2, 9, 16, 23, . . .
A. an = 
B. an = 
C. an = -5 + 
D. an = -5 + 
Factor completely. If the polynomial cannot be factored, say it is prime.6x4 + 13x2 + 6
A. (2x2 + 1)(3x2 + 6) B. (3x2 - 2)(2x2 - 3) C. (6x2 + 3)(x2 + 2) D. (2x2 + 3)(3x2 + 2)
Solve the problem.Find the length of the arc intercepted by a central angle of 
in a circle of radius 
Round to two decimal places.
A. 0.81 cm B. 14.66 cm C. 7.33 cm D. 1.23 cm
Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = 
A. 
B. 
C. 
D. 