Towers a and b are located 10 miles apart. a ranger spots a fire at a 42-degree angle from tower a. another fire ranger spots the same fire at a 64-degree angle from tower b. to the nearest tenth of a mile, how far from tower a is the fire?
7.0 mi
7.4 mi
9.4 mi
13.4 mi

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 .