Mathematics, 25.06.2019 02:00 solisemily62
The half-life of a newly discovered radioactive isotope is 6.4 hours. initially, there are 56 grams of a sample of the isotope. a) how many grams of the isotope remains after 24 hours? show all of your work. round your answer to the nearest hundredth of a gram. b) how many hours will have passed when the sample of the isotope to reaches 6 grams? show all of your work.
Answers: 1
Mathematics, 21.06.2019 17:30
Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)
Answers: 3
Mathematics, 21.06.2019 18:00
Galen sold tickets of his churchâs carnival for a total of $2,820. childrenâs tickets cost $3 each and adult tickets cost $5 each. the number of childrenâs tickets sold was 30 more than 3 times the number of adult tickets slod. how many childrenâs ticket and how many adult tickets did he sell?
Answers: 2
Mathematics, 21.06.2019 18:30
Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.
Answers: 1
Mathematics, 21.06.2019 20:00
Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?
Answers: 2
The half-life of a newly discovered radioactive isotope is 6.4 hours. initially, there are 56 grams...
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