Mathematics, 26.08.2019 18:10 aliozochika
The half-life of carbon-11 is 20 min. a sample of carbon-11 has 25 mci. how many half-lives of carbon-11 occur in 1 hour? how much carbon-11 is in the sample 1 hour after the original sample is measured?
Answers: 2
Mathematics, 21.06.2019 19:00
Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !
Answers: 1
Mathematics, 21.06.2019 22:30
Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.
Answers: 2
Mathematics, 22.06.2019 01:20
Do one of the following, as appropriate: (a) find the critical value z subscript alpha divided by 2 , (b) find the critical value t subscript alpha divided by 2 . 99%; nequals 17; sigma is unknown; population appears to be normally distributed.
Answers: 3
Mathematics, 22.06.2019 02:00
Were only 64 seats. the remaining 6 students had to travel in a separate van. the equation 2b + 6 = 70 represents the given scenario. what does b represent? the number of buses the number of vans the number of students who rode on each bus the total number of students going to the football game
Answers: 1
The half-life of carbon-11 is 20 min. a sample of carbon-11 has 25 mci. how many half-lives of carbo...
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