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A television camera is positioned 3500 ft from the base of a rocket launching pad. The angle of elevation of the camera has to change at the correct rate in order to keep the rocket in sight. Also the mechanism for focusing the camera has to take into account the increasing distance from the camera to the rising rocket. Let's assume the rocket rises vertically and that its speed is 600 ft/s when it has risen 6000 ft.
How fast is the distance from the camera to the rocket changing in ft/s at that moment?
If the televison camera is always kept aimed at the rocket, how fast is the camera's angle of elevation changing in radians/s at that moment?
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Sheila made a scale drawing of a room. The actual room has a width of 44 feet and length of 77 feet. Her drawing has a length of 7 inches. What is the width of the scale drawing of the room?
Please prove the following theorem: A system of linear equations has zero, one or infinitely many solutions; there are no other possibilities.
Evaluate the steady-state concentration - Under some conditions, the rate at which the concentration of a dissolved substance across a cell's membrane changes within the cell is proportional to the difference between it and the outside concentratio..
Selena left an 18% tip for a meal. The total cost of the meal, including the tip, was $40.71. What was the cost of the meal before the tip was added?
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