subject
Mathematics, 11.01.2021 06:30 miguelsanchez1456

Element X is a radioactive isotope such that every 28 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 70 grams, how long would it be until the mass of the sample reached 38 grams, to the nearest tenth of a year?

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 19:30
[15 points]find the quotient with the restrictions. (x^2 - 2x - 3) (x^2 + 4x + 3) ÷ (x^2 + 2x - 8) (x^2 + 6x + 8)
Answers: 1
question
Mathematics, 21.06.2019 22:40
What rotation was applied to triangle def to create d’e’f’?
Answers: 2
question
Mathematics, 22.06.2019 03:30
Jessa bought a yoyo from a company that claims that, with each retraction, the string rolls up by 60% of the original length. she sets up a tape measure and throws the yoyo 3 times. her data are charted below. throw length of string (feet) 1 3 2 1.8 3 1.08 jessa wants to find the sum of the length of string after 10 throws. what is the sum of the lengths, rounded to the nearest hundredth?
Answers: 3
question
Mathematics, 22.06.2019 03:50
The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?
Answers: 2
You know the right answer?
Element X is a radioactive isotope such that every 28 years, its mass decreases by half. Given that...
Questions
question
Mathematics, 14.01.2021 23:20
question
History, 14.01.2021 23:20
question
Biology, 14.01.2021 23:30
question
Mathematics, 14.01.2021 23:30
question
Biology, 14.01.2021 23:30
question
Mathematics, 14.01.2021 23:30
question
Mathematics, 14.01.2021 23:30
Questions on the website: 13722360