Berapa selisih detak jantung pada usia 15 tahun (t=15) dengan membandingkan rumus baru dan rumus lama? a. 9
b. 8,5
c. 7,5
d. 7
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The circumference of a circle is 5 pi cm. what is the area of the circle?

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

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.)