Mathematics, 29.09.2019 14:00 serenityburke
Alex pays $1.50 in sales tax on a $25 purchase. about what percent of the total purchase is the sales tax?
Answers: 1
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 â0.1315 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 âreal-worldâ examples and uses of cobalt-60
Answers: 1
Mathematics, 21.06.2019 20:40
The roots of the function f(x) = x2 â 2x â 3 are shown. what is the missing number?
Answers: 2
Mathematics, 21.06.2019 23:30
Zach spent 2/3 hour reading on friday a 11/3 hlurs reading on saturday. how much more time did he read on saturday tha on friday
Answers: 1
Alex pays $1.50 in sales tax on a $25 purchase. about what percent of the total purchase is the sale...
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