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Discover Questions

The half life astatine 210 is 3.5 days. how much of a 36-g sample of astatine will be left after 14 days? How many star in sky? Three vertices of a rectangle have coordinates (3,4), (5,-4), and (-7,-7). What is the y coordinate of the fourth vertex? What's the half-life of a substance if 250 grams decays to 150 grams in 4 years, round to 2 decimals. pls show work so I can learn it.? 6 AA batteries in series produces 9v. How many mAh is this?

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