A student's cost for last semester at her community college was $2800. she spent $420 of that on books. what percent of last semester's college costs was spent on books?

I’m which figure is point g an orthocenter

Find the value of x. give reasons to justify your solutions! h ∈ ig

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