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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 β0.1315 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 βreal-worldβ examples and uses of cobalt-60
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Mathematics, 21.06.2019 18:00
Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 β 196 is a difference of squares: (y + 14)2 is a difference of squares: (y β 14)2 is a difference of squares: (y + 14)(y β 14) is not a difference of squares
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Mathematics, 21.06.2019 18:00
Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126
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Mathematics, 16.09.2020 09:01
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Mathematics, 16.09.2020 09:01
Mathematics, 16.09.2020 09:01
Mathematics, 16.09.2020 09:01
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Mathematics, 16.09.2020 09:01