Mathematics, 26.06.2019 11:30 lyly214
Abag contains 60 marbles. some are red and the rest are black. there are 9 red marbles for every black marble (1 black marble). how many red marbles are in the bag?
Answers: 1
Mathematics, 21.06.2019 16:30, joThompson
You are cycling around europe with friends. you book into a hostel and you ask the owner what the ratio of men to women is currently staying there. there are 24 men and 6 women. what is the ratio of men to women in its simplest form?
Answers: 2
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 19:00, DestyHilBan1183
What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2
Answers: 2
Abag contains 60 marbles. some are red and the rest are black. there are 9 red marbles for every bla...
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