What is the constant of proportionality in the equation x/y = 2/9

Hormones perform important functions within the reproductive system. during puberty, a number of changes occur in the body. which hormone is responsible for the development of these characteristics in the female? estrogen progestin progesterone testosterone

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?

Factor 15x^3 - 5x^2 +6x-2 by grouping. what is the resulting expression