Which quadrilateral will always have 4-folded reflectional symmetry?

The trigonometric ratios sine and secant are reciprocals of each other

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?

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?