Sarah is 27 years old and is retiring at the age of 65. when she retires, she estimates that she will need a semiannual income for 20 years. if sarah contributes 9% of her semiannual income of $18,567.11 to a 401(k) paying 6.1% compounded semiannually, approximately what semiannual income will she be able to draw?

Which value is not a solution of 8x^3 – 1 = 0

Me asap on # : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.

In a test for esp (extrasensory perception), a subject is told that cards only the experimenter can see contain either a star, a circle, a wave, or a square. as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. a subject who is just guessing has probability 0.25 of guessing correctly on each card. a. the count of correct guesses in 20 cards has a binomial distribution. what are n and p? b. what is the mean number of correct guesses in 20 cards for subjects who are just guessing? c. what is the probability of exactly 5 correct guesses in 20 cards if a subject is just guessing?