Zach is 23 years old. zach's age is 3 years older than twice maya's age. let m represent maya's age. what equation can be used to solve for maya's age?

Apath 3 m wide runs around the inside of a square park inside 60 m.find the area of the path.pls

What number should be added to both sides of the equation to complete this square? x^2-10x=7

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