Mathematics, 05.07.2019 01:30 kallee10
My notes oask your tea 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 85% of the lead to decay? (round your answel to two decimal places.) hr
Answers: 2
Mathematics, 20.06.2019 18:04
4+6x-3x^3 in standard form with explanations because i donβt understand
Answers: 1
Mathematics, 21.06.2019 13:00
Aregression was run to determine if there is a relationship between hours of tv watched per day (x) and number of situps a person can do (y). the results of the regression were: y=ax+b a=-0.662 b=30.418 r2=0.703921 r=-0.839
Answers: 2
Mathematics, 21.06.2019 14:00
Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)
Answers: 3
Mathematics, 21.06.2019 16:30
Anyone know? is appreciated! will mark brainliest if correct!
Answers: 2
My notes oask your tea the radioactive isotope of lead, pb-209, decays at a rate proportional to the...
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