At spinet middle school, 35% of the classrooms are for sixth graders. if there are 49 sixth grade classes, how many classrooms are there total?

Write a story that matches with the expression 42x-5 pls hurry

What’s -11-33k and factor each expression completely

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