KaliBratz
27.02.2021 •
Mathematics
Strontium is a radioactive material that decays with a continuous rate (k) of -0.0244. If there are 30 grams of strontium present today and it decays continuously, how much will be present in 20 years?
Solved
Show answers
More tips
- F Family and Home What Kind of Wedding to have After 11 Years of Marriage?...
- C Computers and Internet How to Top Up Your Skype Account Without Losing Money?...
- H Health and Medicine How does childbirth happen: everything future mothers need to know...
- H Health and Medicine What Are the Best Vitamins? A Scientific View on Vitamin Supplements...
- A Auto and Moto How to Deregister a Car in Moscow?...
- A Auto and Moto What Is the Cost of Customs Clearance for a Car in Russia?...
- A Auto and Moto How to choose the right drive for your BMW...
- H Health and Medicine 10 Tips for Avoiding Vitamin Deficiency...
- L Leisure and Entertainment Mysteries of the Name Vyacheslav Dobrynin...
- H Health and Medicine What makes Graves’ disease dangerous?...
Answers on questions: Mathematics
- M Mathematics Y=3x+1 on a table graph...
- M Mathematics Cory paid $9 for lunch and paid $11 to go to a movie. How much money did he spend?...
- M Mathematics Half a number plus 2.5 times that number equals 18. what is the number?...
- M Mathematics The value of a 1970 comic book has increased 12% per year. it originally sold for $0.35. write an exponential equ show your work.ation that models this situation and use it to answer...
- E English What would happen if you lost someone you really loved? How would you act? Would you feel ok?...
Ответ:
18.42 g
Step-by-step explanation:
Using the exponential growth / Decay function :
A = Pe^kt
A = final amount ; P = initial amount, t = number of years ; t = 20
A = 30e^-(0.0244 * 20)
A = 30e^-0.488
A = 30 * 0.6138528
A = 18.415586
Strontium present after 20 years will be :
18.42 g
Ответ:
Given:
Probability that the Yankees wins a game is
P(A) = 0.46
Probability that the Yankees loses a game is
P(A') = 1 - P(A') = 1 - 0.46 = 0.54
Probability that the Yankees scores 5 or more runs in a game is
P(B) = 0.59
Probability that the Yankees scores fewer than 5 runs in a game is
P(B') = 1 - P(B) = 1 - 0.59 = 0.41
Probability that the Yankees wins and scores 5 or more runs is
P(A⋂B) = 0.39
Applying the De Morgan's law, the probability that the Yankees scores fewer than 5 runs and they loses the game would satisfy:
1 - P(A'⋂B') = P(A) ⋃ P(B) = P(A) + P(B) - P(A⋂B)
or
1 - P(A'⋂B') = 0.46 + 0.59 - 0.39
or
1 - P(A'⋂B') = 0.66
=> P(A'⋂B') = 1 - 0.66 = 0.34
Applying the Bayes theorem, the probability that the Yankees would score fewer than 5 runs, given they lose the game:
P(B'|A') = P(A'⋂B')/P(A')
or
P(B'|A') = 0.34/0.54 = 0.630
Hope this helps!
:)