Solve.
-A railroad tunnel is shaped like a semi-ellipse. The height of the tunnel at the center is 15 ft and the vertical clearance must be 10 ft at a point 10 ft from the center. Find an equation for the ellipse. 
A) 
B) 
C) 
D) 
Correct Answer:
Verified
Q97: Find the center and the radius of
Q98: Write the equation for the circle described.
-Endpoints
Q99: Graph the circle. Q100: Match the given graph with its equation. Q101: Identify the equation as a parabola, ellipse, Q103: Solve the problem. Q104: Solve. Q105: Solve the problem. Q106: Identify the equation as a parabola, ellipse, Q107: Solve the problem.
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-A circular pond is being
-A satellite is to be put into
-A circular pond is being
-A circular pond is being
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