An arrow shot into the air is 160t -16^2 feet above the ground t is seconds after it is released. during what period of time is the arrow above 384 feet?

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.

If point cis between points a and b, then ac + — = ab

Find the area of the region between a regular hexagon with sides of 6" and its inscribed circle.