Point p= -4 the distance between point q and point p is 6 1/2 units. Which number could represent point q

If np3 /nc2 = 6, find the value of n

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.

What is the measure of angle a and angle c ?