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Mathematics, 21.06.2019 23:20
Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g
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Mathematics, 22.06.2019 01:30
Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected
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Mathematics, 01.08.2019 21:10
Social Studies, 01.08.2019 21:10
Biology, 01.08.2019 21:10
English, 01.08.2019 21:10
Mathematics, 01.08.2019 21:10
Biology, 01.08.2019 21:10