Mathematics, 19.07.2019 19:20, alishabhappy1
thorium 234 is a radioactive substance that decays at a rate proportional to the amount present. 1 gram of this material is reduced to 0.8 grams in one week
(a) find an expression that expresses the amount of thorium 234 present at any time
(b) find half life of thorium 234
(c) find amount of thorium 234 present after 10 weeks
Answers: 1
Mathematics, 21.06.2019 20:40, guyfromnasa
Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?
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Mathematics, 21.06.2019 21:00, kitttimothy55
Julie buys 2kg of apples and 7kg of pears ? 12.70. the pears cost ? 1.30 per kilogram what is the price per kilogram of the apples? show your working out
Answers: 2
Mathematics, 21.06.2019 22:00, rhineharttori
Here is my question! jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?
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thorium 234 is a radioactive substance that decays at a rate proportional to the amount present. 1 g...
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