Simon flips 8 coins and lays them out in a straight line.
a) How many possible combinations of heads and tails are possible?
b) What is the probability of Simon flipping 8 tails?
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Aline on the wall and a line on the floor are skew. always, sometimes, or never?

Adoctor administers a drug to a 38-kg patient, using a dosage formula of 50 mg/kg/day. assume that the drug is available in a 100 mg per 5 ml suspension or in 500 mg tablets. a. how many tablets should a 38-kg patient take every four hours? b. the suspension with a drop factor of 10 ggt/ml delivers the drug intravenously to the patient over a twelve-hour period. what flow rate should be used in units of ggt/hr? a. the patient should take nothing pills every four hours. (type an integer or decimal rounded to the nearest hundredth as needed.)

Acircle has a circumference of 7.850 units. what is its radius?