A circular track is 1/2 mile long. Elena runs on this track, completing each lap 1/4 of an hour. What is Elena’s running speed?

Use the normal approximation to the binomial distribution to answer this question. fifteen percent of all students at a large university are absent on mondays. if a random sample of 12 names is called on a monday, what is the probability that four students are absent?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol