What is the image of the point (-4,8) after a rotation of 90 counterclockwise about the origin?

Which one ? is the answer and how to find this answer

60 2(x + 2) in the diagram, gef and hef are congruent. what is the value of x?

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