Solve for the specified variable:
c(a+b)-d=f for a

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.

Given that abcd is a rhombus, what is the value of x?

Which two undefined geometric terms always describe figures with no beginning or end?