Tell whether each sequence is arithmetic. justify your answer. if the sequence is arithmetic, write a function rule to represent it. a. 128, 64, 32, 16, b. 3, 3.25, 3.5, 3.75,

Find the solutions for a triangle with a =16, c =12, and b = 63º

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?