Arectangle's length is 5 units more than the width. the perimeter is 9 times the width. what are the length and the width of the rectangle described?

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?

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if