When completing the square, what value must you add to both sides of the equation to create a perfect square trinomial? x2 − 4x + ? = 0 + ? .

Suppose that an airline uses a seat width of 16.516.5 in. assume men have hip breadths that are normally distributed with a mean of 14.414.4 in. and a standard deviation of 0.90.9 in. complete parts (a) through (c) below. (a) find the probability that if an individual man is randomly selected, his hip breadth will be greater than 16.516.5 in. the probability is nothing. (round to four decimal places as needed.)

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

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