Solve the problem.A domed ceiling is a parabolic surface. For the best lighting on the floor, a light source is to be placed at the focus of the surface. If 5 m down from the top of the dome the ceiling is 24 m wide, find the best location for the light source.
A. 14.4 m down from the top
B. 7.2 m down from the top
C. 21.6 m down from the top
D. 28.8 m down from the top
Answer: B
Mathematics
You might also like to view...
Determine if the given polar coordinates represent the same point.(10, ?/6), (10, 7?/6)
A. No B. Yes
Mathematics
Solve the problem.If u = 12i - 2j and v = -7i + 9j, find u + v.
A. 4i + 7j B. 5i + 7j C. 19i + 4j D. -19i + 7j
Mathematics
Find the requested angle.Supplement of 59°
A. 31° B. 121° C. 301° D. 118°
Mathematics
Divide.
A. - 
B. - 
C. - 
D. 
Mathematics