What is the length of a marathon in (1mile=1.6kilometers) ?

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 .

Solve for x and select the correct answer

3c2 + 2d)(–5c2 + d) select all of the partial products for the multiplication problem above.