A doomed ceiling is a parabolic surface. Ten meters down from the top of the dome, the ceiling is 15 meters wide. For the best lighting on the floor, a light source should be placed at the focus of the parabolic surface. How far from the top of the dome, to the nearest tenth of a meter, should the light source be placed?

Q: How many miles (1 mile = 5280 feet) is the aircraft from the airport? Round the answer to the…

A: We will use concept of angle of depression.

Q: The Paris Ferris Wheel has a radius of 110 feet and is boarded from the bottom from a platform that…

A: Please see the answer below.

Q: A street is 75 cm long and needs to be cleaned. The street cleaning vehicle has wheels that have a…

A: Length of street to be cleaned=75 cm Diameter of cleaning vehicle=1m We know , 1m=100cm So, diameter…

Q: A balloonist is directly above a straight road 1.7 miles long that joins two towns. She finds that…

A:

Q: Rachel and Stacy are 65 m apart on opposite sides of a tree. Rachel sites the top of the tree at an…

A:

Q: The distance from the top of the cone to the edge is 15 feet. The height of the cone is 6 feet. What…

A:

Q: 8. The local Parks and Recreation department bought a new slide for the local playground. The slide…

A: We will make the diagram to find the angle of depression.

Q: The aspect ratio of a particular smartphone is 2.176.  If the width is 148 mm, what is the height?…

A: A detailed solution is given below

Q: The Blue Angels, the Navy's elite flying squadron, have performed for more than 427 million fans…

A: Elevation of plane P = 1570 ft,Elevation of plane A = 1000 ft,Angle of Elevation of plane P =…

Q: While shopping at his local home improvement store, Chen noticed that the directions for an xtension…

A: To find the length of ladder  The figure is

Q: An architect is designing a two-story house that is located at 40°N latitude. The architect wants to…

A: How much roof overhang should the architect provide so that at noon on the day of the summer…

Q: I was in Sydney in 2003 and, while walking across the Sydney Harbour Bridge,  I took this photo of…

A:

Q: 1. In order to measure the height of the ride Chaos at ValleyFair, Matt stands 25 m from the bottom…

A:

Q: Claudia owns a lot in a cul-de-sac. The sides of the lot are parallel and are perpendicular to the…

A:

Q: Tamara wants to calculate the height of a tree outside her home. Using her clinometer, she measures…

A:

Q: 2. A man is viewing a large oil painting which is on display at the Millenium Art Gallery. In order…

A:

Q: The filament of a car light bulb is at the focus of a parabolic reflector, which sends out light in…

A: Given one is a parabolic reflector, so a parabola with vertex at (0,0) and focus at 1.5 inches from…

Q: Find two supplementary angles such that the measure of the first angle is 30° less than five times…

A: Two angles are known as supplementary if the addition of their measures is 180 degrees.

Q: An airplane is heading north at an airspeed of 600 km/hr, but there is a wind blowing from the…

A:

Q: Some children have made their own baseball diamond to play on and, while they have the shape…

A:

Maximization

Have you ever seen a bridge in the shape of a parabola? Where is its maximum on the bridge? The maximum of that bridge is the highest point on that bridge. The process of finding the maximum of the bridge here is called the maximization.