The length of one side of a triangle is 3 feet less than twice the length of its second side. The length of the third side is 2/3 of the sum of the lengths of the first two sides. Find the lengths of all three sides if the perimeter of the triangle is 6.5 feet.

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.