. Suppose that vehicle speed on a bridge can be modeled as normally distributed. a. If 5% of all vehicles travel less than 39.12 km/h and 10% travel more than 73.24 km/h, what are the mean and standard deviation of vehicle speed? b. What is the probability that a randomly selected vehicle’s speed is between 50 km/h and 65 km/h? c. What is the probability that a randomly selected vehicle’s speed exceeds the speed limit of 70 km/h?

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality