Mathematics, 06.06.2021 17:00, jazmyn1314
The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time t and has a half-life of 3.3 hours. If 1 gram of this isotope is present initially, how long will it take for 70% of the lead to decay? (Round your answer to two decimal places.)
Answers: 2
Mathematics, 21.06.2019 17:30, mduncan840
The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?
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Mathematics, 21.06.2019 18:30, zahradawkins2007
If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?
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Mathematics, 21.06.2019 21:00, 420420blazee
The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry
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The radioactive isotope of lead, Pb-209, decays at a rate proportional to the amount present at time...
History, 21.07.2019 22:30
History, 21.07.2019 22:30