A 10-foot-tall ladder rests against a wall, touching it at a point 9 feet above the ground. Approximately what angle does the ladder make with the floor? Round answer to the nearest degree.

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .