Solve the problem.A radio telescope has a parabolic surface. If it is 1 m deep and 
wide, how far is the focus from the vertex?A = 20 mB = 1 m
A. 100 m
B. 1 m
C. 5 m
D. 25 m
Answer: D
Mathematics
You might also like to view...
Evaluate the expression for the given value or values.x - y + z for x = 25, y = 8, z = 2
A. 15 B. 20 C. 19 D. 35
Mathematics
Choose the expression which is equivalent to the given expression.2 sin 14° cos 14°
A. cos 28° B. cos 7° C. sin 28° D. sin 7°
Mathematics
Find a rectangular equation equivalent to the given pair of parametric equations.x = 2 cos t, y = 3 sec t; - 
< t < 
A. y = 6x; 0 < x ? 2
B. y = 
; 0 < x ? 2
C. y = 4x; 0 < x ? 2
D. y = 
; 0 < x < 2
Mathematics
Perform the indicated operation. Simplify, if possible.
- 
+ 
A. 
B. 
C. 
D. 
Mathematics