Which is the atomic arithmetic sequence

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

Given: ∆mop p∆mop =12+4 3 m∠p = 90°, m∠m = 60° find: mp, mo