In the diagram below of triangle V W X Y is a midpoint of VW and Z is a midpoint of W X. If Y Z = 21, and V X = 106 - 10x, what is the measure of Y Z?

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5