Mathematics, 14.01.2022 01:20, kelli151
half life is defined as the amount of time, often in years, that it takes for a radioactive substance to decrease its radioactivity by 50%. if a substance has a half-life of 43 years (f) and starts with 300 grams radioactive, then how much remains radioactive after 83 years? round to the nearest tenth of a gram.
Answers: 1
Mathematics, 21.06.2019 21:40, ur4286
Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.
Answers: 3
half life is defined as the amount of time, often in years, that it takes for a radioactive substanc...
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