Reshay asked 30 sixth-graders if they
owned dogs or cats. Of the 30 students asked, 20
respon...
Mathematics, 26.03.2021 08:50 adlaremse2987
Reshay asked 30 sixth-graders if they
owned dogs or cats. Of the 30 students asked, 20
responded that they own dogs. If Reshay asks all
of the 270 sixth-graders at his school the same
question, about how any of them can be expected
to say they own dogs?
A. 180
B. 200
C. 150
D. 100
Answers: 2
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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 17:00
For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.
Answers: 3
Mathematics, 21.06.2019 20:00
Which of these tools or constructions is used to inscribe a hexagon inside a circle?
Answers: 1
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