Four band members, harry, isabel, jose, and karen, are all boarding a bus to attend a concert. in each arrangement below, the first initial of each person’s name represents that person’s position as he or she boards the bus: first, second, third, and fourth. if we know that karen boards the bus first, which shows the possible outcomes for this event?

a=khij
b=khij, khji
c=khij, khji, kjhi, kjih
d=khij, khji, kjhi, kjih, kihj, kijh

Click on the graphic until you find the right quotient. (36xa - 30xb) ÷ (-6x2)

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?

The moats separating people from the animals are 5 m wide for lions and 4 m wide for the elephants. if the lion’s moat is 4 m deep, how deep should the elephants’ moat be?