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1) An airplane flying at an altitude of 6000 feet sights the angle of depression to a control tower to be 14 degrees. Find the horizontal distance the plane is from the control tower. (Disregard the height of the tower.)2) The angle of elevation from ground level to the top of a building is 46 degrees. If the observer is standing 380 feet from the building, how tall is the building?3) A tree which is 54 feet tall casts a shadow of 92 feet. Find the angle of elevation of the sun. Round to the nearest degree.4) Find the horizontal distance from a ship to the base of a 180-foot-tall lighthouse if the angle of depression to the ship from the top of the lighthouse is 46 degrees. (Disregard the dimensions of the ship.)5) From a police helicopter flying at 1,525 feet, a stolen car is sighted at an angle of depression of 80 degrees. Find the distance of the car (to the nearest foot) from a point directly below the helicopter.
The function can be used to approximate the number of computer sales during the years 1990-2000 where x is the number of years after 1990 and f(x) is the computer sales (in millions).
A representative is to be selected from each of 3 departments in a small college. There are 7 people in the first department, 5 in the second department, and 4 in the third department.
the intensity of light from a light bulb, measure in watts (w), varies inversely as the square of the distance (d) from the light bulb. Suppose I is45 w/m(squared) when the distance is 6m.
Explain the difference between the solution sets when a compound inequality contains the word "and" versus when the inequality contains the word "or".
Which mover provides a better deal for 2 hours of work? How did you arrive at your answer?
A high school counselor wants to examine whether the teenage pregnancy rate at her school is different from the rate nationwide. She knows that the rate nationwide is 15 %. She randomly selects 80 female students from her high school. She finds th..
two friends leave 2.1 miles apart along the same road. If they walk toward each other at rates that differ by .5mph and meet 36 minutes later, how fast is each person walking?
A true-false examination has 48 questions. June has probability 3/4 of answering a question correctly. April just guesses on each question. A passing score is 30 or more correct answers. Compare the probability that June passes the exam with the p..
A 500g sample of an unknown material requires 750 calories of heat to raise its temperature by 50 degrees C. Use equation (1) and table 6.1 to identify the material.
what is the largest interval on which the solution is guaranteed to exist for the following initial value problem? (do not actually solve the equation)
On a map 1 inch represents 58 miles. The distance between two cities on the same map is 5.85 inches. How many miles apart are the two cities?
e 0.03. A sample of 9 players is selected at random. What is the probability that the sample contains no defective units? (Round your answer to four decimal places.)
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