In a deck of cards with 52 cards and 4 suits, what is the probability of getting an ace?

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?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11