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Mathematics, 21.06.2019 16:50
The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60
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Mathematics, 21.06.2019 23:00
Find the rate at which the water is now flowing from the tap give your answer cubic centimetres per second
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Mathematics, 21.06.2019 23:00
Find the distance between c and d on the number line c=3 and d=11
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Mathematics, 22.06.2019 03:30
Jack has a rectangular piece of land, the area of which is represented by a1 = 9.5l. his brother has a different rectangular piece of land, the area of which is represented by a2 = l(14 − l). let a represent the area in square meters and l represent the length in meters of the pieces of land. the two equations plotted on a graph meet at a point as shown in the image
Answers: 1
Mathematics, 17.03.2020 17:12
Mathematics, 17.03.2020 17:12
Mathematics, 17.03.2020 17:12
History, 17.03.2020 17:12
Chemistry, 17.03.2020 17:13
History, 17.03.2020 17:13
Mathematics, 17.03.2020 17:13
Mathematics, 17.03.2020 17:13
Computers and Technology, 17.03.2020 17:13
Mathematics, 17.03.2020 17:13
Mathematics, 17.03.2020 17:14