If angle 1 and angle 2 are complementary, and their measures are (x + 20)o and (4x + 30)o respectively, find x, the measure of angle 1 and the measures of angle 2.

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected