what is the slope of the line trated in the picture below?
note: one scale is equivalent to 1.
11

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?

Evaluate cos2θ for cosθ = square root of 3/2

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)