If cos(x) = 3/5 and sin x < 0, find sin(2x) as a fraction in simplest terms

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0

How do i find the missing angle measure in a polygon