Can someone me with question ! test tomorrow offering 10 points xx

Acertain standardized? test's math scores have a? bell-shaped distribution with a mean of 520 and a standard deviation of 105. complete parts? (a) through? (c)

How can you find the magnitude of a vector, v = < x, y > , where the horizontal change is x and the vertical change is y?

Two trains leave stations 546 miles apart at the same time and travel toward each other. one train travels at 95 miles per hour while the other travels at 115 miles per hour l. how long will it take for the two trains to meet