Which property is illustrated by the equation? (x + y) + z = z + (x + y)

Commutative Property of Addition
Identity Property of Addition
Associative Property of Addition
Distributive Property of Addition

What scale factor was applied to the first rectangle to get the resulting image interior answer as a decimal in the box

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

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.