The temperature fell 13 degrees on each of the first 2 days of the week. it rose 7 degrees on each of the next 3 days, and fell 9 degrees on each of the last 2 days. if the temperature was originally 34 degrees, what was the final temperature?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

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 .

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).