Find height of parabolic arch at points from center
The parabolic arch has the span of 120 ft a maximum height of 25 feet. Select appropriate rectangular coordinate axes and determine equation of parabola. Then find height of arch at points 10 ft, 20 ft, and 40 ft from center.
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The null hypothesis is to be tested at 95% confidence. Find out the critical value for this test. What do you conclude? Find out the p-value and perform the test.
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Origin of beam is 35 feet from circle. At what angle of elevation must beam be aimed to make sure that it goes through hole?
Select appropriate rectangular coordinate axes and determine equation of parabola. Then find height of arch at points 10 ft, 20 ft, and 40 ft from center.
The ball is hit into air. Its height, s, at time t, is provided by equation s(t)=-16t^2+62 t+4. Find maximum height of ball. Round to the nearest foot.
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A college statistics professor has office hours from 9am to 10:30am daily. A sample of waiting time to see professor(in minutes) is 10,12 20, 15, 17, 10, 30, 28,35, 28, 19, 27, 25, 22, 33, 37, 14, 21, 20, 23. Supposing standard deviation is 7.84,
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