Michael and jeff working together can build a shed in 8 hours. michael works 3 times as fast as jeff. how long would it take jeff to build a shed if he worked alone?

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

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

Can someone me and explain..will award brainlest!