The ratio of boys to girls is 4: 5 what is the ratio of boys if the total is 81 students?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

What are the solutions of the system? y = x^2 + 2x +3y = 4x - 2a. (-1, -6) and (-3, -14)b. (-1, 10) and (3, -6)c. no solutiond. (-1, -6) and (3, 10)

In the geometric progression –3, 12, −48… what term is 3,072?