To do brainiest you have to have two answers and you can mark brainiest there should be Two blue crowns and once you pick that crown should become gold when you pick
Answer:
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After each hour 60% ( or 0.60) of the drug will be present.
The equation is A = 100(0.6)^t where t = time in hours. (answer)
Answer:
2/10 or in its simplest form 1/5
Step-by-step explanation:
there is 2 grey marbles so 2/10 (there is 10 marbles altogether)
so half of 2 is 1 and half of 10 is 5
so the answer is 1/5