Mathematics, 02.06.2020 07:57 hannahmjohnson0443
On a given workday, the rate, in tons per hour, at which unprocessed ore arrives at a refinery is modeled by O (t) = 20 + 10 cos (t2 ÷ 25) where t is measured in hours and 0 <= t <= 10. At the beginning of the workday, t = 0, the refinery has 100 tons of unprocessed ore. During the hours of operation, the refinery processes ore at a constant rate of 25 tons per hour. (A) Find O' (4). Usng correct units, interpret your answer in the context of the problem. (B) How much total ore has been processed by the refinery after the plant has been open for 3 hours. (C) Is the amount of unprocessed ore at the refinery increasing or decreasing at time t = 4 hours? Show the work that leads to your answer (D) Determine the time at which the total rate of ore at the refinery is neither increasing nor decreasing? Justify your answer
Answers: 1
Mathematics, 21.06.2019 16:00
Martin likes to make flower bouquets that have 3 daffodils and 4 tulips per vase. a daffodil has a mass of d grams, a tulip has a mass of t grams, and the vase has a mass of u grams. the expression 5(3d + 4t + v) describes the mass of 5 bouquets. match each amount in the situation with the expression that represents it. situation expression number of bouquets mass of one bouquet mass of the tulips in one bouquet 4t mass of the daffodils in one bouquet 3d + 4t + v
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Mathematics, 21.06.2019 16:20
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Mathematics, 21.06.2019 18:00
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Mathematics, 22.06.2019 02:00
There are a total of 75 students in the robotics club and science club. the science club has 9 more students than the robotics club. how many students are in the science club?
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On a given workday, the rate, in tons per hour, at which unprocessed ore arrives at a refinery is mo...
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