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How many natural numbers n satisfy the inequality: 1/7 < n/10 < 4/5 ?

Is every rectangle is a parallelogram? true false

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)