In a class of 30 students there are 18 girls. what is the ratio of boys to girls in the class.
oh and how would i write the equasion to solve the problem

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)

What is the difference between the equations of a vertical and a horizontal line?