Write fraction as a sum or difference

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

Asphere has a diameter of 10 in. what is the volume of the sphere?

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.