You randomly select 30 Virginia license plates. Let X denote the number of vanity plates. The probability that exactly four license plates are vanity plates is . The probability that at least nine license plates are vanity plates is . The expected value of X is , and the standard deviation of X is

Acomposition of transformations maps δxyz to δx"y"z". the first transformation for this composition is , and the second transformation is a 90° rotation about point x'.

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

What is the graph of the absolute value equation ? y=|x|-5