Answers: 1
Mathematics, 21.06.2019 16:50, lunamoon1
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
Answers: 1
Mathematics, 21.06.2019 19:30, auzriannamarie
Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?
Answers: 1
Mathematics, 21.06.2019 21:30, Harriche
The perimeter of a rectangular lot of land is 436 ft. this includes an easement of x feet of uniform width inside the lot on which no building can be done. if the buildable area is 122 ft by 60 ft, determine the width of the easement. select one: a. 9 feet b. 18 feet c. 4.5 feet d. 7 feet
Answers: 3
Four is eighteen more than five times a number...
Mathematics, 17.09.2020 04:01
Mathematics, 17.09.2020 04:01
Physics, 17.09.2020 04:01
Mathematics, 17.09.2020 04:01
Mathematics, 17.09.2020 04:01
Mathematics, 17.09.2020 04:01
English, 17.09.2020 04:01
Mathematics, 17.09.2020 04:01
Mathematics, 17.09.2020 04:01
Mathematics, 17.09.2020 04:01