Solve the following systems: 3x+1=8y, 11y-3x=-11

Find the slope of the line passing through a pair of points

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

Jane has 5 nickels. john has 3 dimes. jane says she has a greater amount of money. with the information given, is she correct?