Rectangle adef and isosceles trapezoid fbce both have a base of 20. the lower base angles of the trapezoid are 45° and the legs of the trapezoid are 9. how long is bc? round your answer to the nearest tenth.

The accompanying data represent the miles per gallon of a random sample of cars with a three-cylinder, 1.0 liter engine. (a) compute the z-score corresponding to the individual who obtained 42.342.3 miles per gallon. interpret this result.