Solve the problem.A searchlight is shaped like a paraboloid of revolution. If the light source is located 2 feet from the base along the axis of symmetry and the opening is 8 feet across, how deep should the searchlight be?
A. 8 ft
B. 4 ft
C. 0.3 ft
D. 2 ft
Answer: D
Mathematics
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Use Euler's method to find y-values of the solution for the given values of x and ?x, if the curve of the solution passes through the given point. 
= y2(1 - 2x); x = -1 to x = 0.5; ?x = 0.5; (-1, -1)
A. 
B. 
C. 
D. 
Mathematics
Find the greatest common factor of the list of items.18, 21, and 30
A. 3 B. 18 C. 6 D. 1
Mathematics
Use a calculator to find a graphical solution to the equation. Express results to the nearest thousandth.7n2 = -6n - 1
A. -0.286, -0.571 B. -0.655, -1.059 C. -0.227, -0.631 D. -0.113, -0.315
Mathematics
Given the radius, r, of a circle, find the diameter; or given the diameter, d, of a circle, find the radius.r = 22.1 yd
A. d = 44.2 yd B. d = 69.39 yd C. d = 11.05 yd D. d = 1533.61 yd
Mathematics