Find the length of the hypotenuse in each right triangle. round to the nearest tenth, if necessary. (look at photo to see questions)(answer numbers 1 and 2)(explain your work)

Can someone me and plz do the problem

Solve: 3x+y=6 4x-2y=18 show all work !

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.)