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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 18:00
You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?
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Mathematics, 21.06.2019 19:10
In the triangles, bc =de and ac fe.if the mzc is greater than the mze, then ab isdfelth
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Mathematics, 22.06.2019 02:30
Solve the system of equations. x=-2y+1 and x+2y=9. show work
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Is (-5,6) a solution for 4x + 3y = 9...
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