A skateboarder is practing at the city park. he is skating up and down the steepest straight line ramp. if the hightest point on the ramp is 30 feet above the ground and the horizomtal distance from the base of the ramp to a point directly beneath the upper end is 500 feet, what is the slope of the ramp

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