Edward has to take a seven-question multiple-choice quiz in his sociology class. each question has four choices for answers, of which only one is correct. assuming that edward guesses on all seven questions, what is the probability that he will answer a) all seven questions correctly, b) exactly three questions correctly, c) at least three questions correctly.

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3

If you have the following equation, 2/3x+5/6-x=2-3/4x what would you multiply each term by to get rid of all the fractions

Triangles abd and ace are similar right triangles. witch ratio best explains why the slope of ab is the same as the slope of ac?