According to modern? science, Earth is about 4.5 billion yearsold and written human history extends back about? 10,000 years.Suppose the entire history of Earth is represented with a10?-meter-long ?timeline, with the birth of Earth on one end andtoday at the other end. a. What distance represents 1 billion?years? b. How far from the end of the timeline does written humanhistory? begin?
A certain antihistamine is often prescribed for allergies. Atypical dose for a 100?-pound person is 19 mg every six hours.Complete parts? (a) and? (b) below. a. Following this? dosage, howmany 12.4 mg chewable tablets would be taken in a? week? b. Thisantihistamine also comes in a liquid form with a concentration of12.4 ?mg/8 mL. Following the prescribed? dosage, how much liquidantihistamine should a 100?-pound person take in a? week?
