a chimp is taking a multiple-choice test. of course the chimp can't read and is guessing for every question. if there are 4 choices for each question, and there are 84 questions on the test, how many questions can we expect the chimp to answer correctly? (hint: there is a 25% chance that the chimp will guess correctly)​

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?

Given: klmn is a parallelogram m? n=3m? k, lf ? kn , ld ? nm kf=2 cm, fn=4 cm find: lf, ld

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.