Find the sum of (–4 + i) and (10 – 5i).

a. –3 + 5i

b. –3 - 5i

c. 6 – 4i

d. 6 – 6i

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

Randy and trey take turns cleaning offices on the weekends. it takes randy at most 4 hours to clean the offices. it takes trey at most 6 hours to clean the offices. what is the greatest amount of time it would take them to clean the offices together? 2.4 hours 2.5 hours