The median of the data set is 18. What number is missing? 12, 17, ___, 21, 13, 25 *

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?