Aparabola is located at (4,0), and the directrix is located at x = –4.

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

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 .

The mean of 10 values is 19. if further 5 values areincluded the mean becomes 20. what is the meanthese five additional values? a) 10b) 15c) 11d) 22