There are $5$ girls and $5$ boys in a chess club. the club holds a round-robin tournament in which every player plays against every other player exactly once.

what fraction of the games are boy-versus-boy? enter your answer as a fraction in simplified form.

What is the value of  y  in the solution to the system of equations? x  +  y  =  12x  –  3y  =  –30a. –8b. –3c. 3d. 8

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Because of your favorite lemonade it is $3.84 for 3 gallons. write this as an unit rate