Math Portfolio: Radioactive Decay

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Math Portfolio 2

Radioactive Decay

Lee, Grade 11

This portfolio is about exponential decay (radioactive decay). Exponential decay means there’s a decrease at a rate proportional to its value. In this case, it talks about a community with an initial population of 100, and each member of the community has the potion of living in 1 of 8 places with equal probability. We are assigned to display the random number of allocation, make tables and graphs accordingly, choose an appropriate model, and list some errors and limitations.

Year 0

1,2,1,8,8,4,3,3,7,3,2,4,3,8,2,2,2,6,5,4,8,3,5,2,5,6,6,5,2,15,7,2,5,8,6,1,5,6,2,5,2,6,7,1,3,8,1,6,7,4,7,7,8,3,4,8,6,5,58,3,3,2,7,6,3,3,7,5,5,7,5,6,3,5,8,2,2,8,1,7,7,7,6,4,6,3,7,84,1,4,3,3,3,6,8,1,2

RandInt (1,8)

Result: 8

Location 8 Eliminated

Total population= 100-13=87

Year 1

1,5,8,4,4,6,7,5,2,1,7,4,1,5,1,7,6,3,4,8,8,7,7,8,5,8,5,4,7,2,8,4,1,3,5,1,3,7,4,8,2,4,1,1,5,7,1,7,1,2,3,2,4,4,6,6,8,3,4,5,4,7,3,1,6,7,2,4,1,2,6,1,5,7,7,7,5,6,6,6,4,5,5,7,6,1,3

Join now!

RandInt (1,8)

Result: 5

Location 5 eliminated

87-12=75

Year 2

6,7,2,6,6,1,5,7,1,8,5,4,4,5,8,2,5,7,4,5,3,3,2,7,6,6,1,2,3,3,3,7,1,3,3,6,3,6,5,2,4,5,5,2,2,3,1,8,5,6,3,8,6,5,5,8,2,7,3,1,4,4,7,5,8,1

RandInt(1,8)

Result: 1

Location 1 eliminated

75-7=68

Year 3

3,8,6,8,6,3,1,8,3,5,8,8,7,8,2,5,2,4,2,2,5,6,7,4,8,4,6,4,2,8,7,1,1,7,3,6,8,8,5,2,6,5,3,7,2,2,2,4,4,1,1,6,3,4,8,2,5,2,1,2,1,1,4,7,1,8,1,2

RandInt(1,8)

Result: 4

Location 4 Eliminated

68-8=60

Year 4

2,5,1,5,7,7,6,6,6,8,1,1,4,5,7,2,7,4,3,7,3,7,1,8,7,4,6,1,7,1,2,4,4,4,3,3,4,4,1,6,6,2,8,1,8,2,5,5,2,1,7,6,4,8,2,4,2,7,5,7

RandInt (1,8)

Result: 7

Location 7 eliminated

60-11=49

Year 5

4,6,2,6,6,6,6,1,4,7,4,4,2,1,8,4,4,5,6,6,1,3,4,7,5,5,6,3,6,6,3,6,8,6,8,3,5,2,7,1,7,6,3,2,7,4,2,3,5

RandInt (1,8)

Result: 4

49-8=41

Year 6

7,8,2,4,8,6,2,2,2,3,5,7,2,3,2,7,7,8,5,6,3,1,5,4,8,4,8,6,4,4,1,4,1,8,5,7,3,1,6,1,7

RandInt(1,8)

Result: 5

41-4=37

Year 7

2,2,4,7,5,4,7,6,3,2,8,4,7,2,8,1,3,8,3,3,5,3,5,8,3,6,3,3,4,8,1,2,4,4,1,3,2

RandInt (1,8)

Result: 4

37-6= 31

Year 8

6,1,7,1,8,4,4,1,6,5,1,6,8,4,3,5,6,3,5,2,1,8,1,1,2,6,4,3,3,6,5

RandInt(1,8)

Result: 6

31-6=25

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