Neil Armstrong was the first person to walk on the moon. If a person was the first to walk on the moon, then that person was Neil Armstrong.19.If a person Neil Armstrong, then that person the first person to walk on the moon.20.Since Neil Armstrong was the first person to walk on the moon, the contrapositive is . Since the contrapositive is , the must be true.

Two parallel lines are crossed by a transversal. what is the value of x? x = 40 x = 70 x = 110 x = 130

Which is an x-intercept of the graphed function? (0, 4) (–1, 0) (4, 0) (0, –1)

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.