6x - 4 < - 10. Solve inequality and graph the solution

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?

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?