9 X 19 + 2 X 57 - 75 = n

Is the figure congruent? yes or no?

What is the scale factor of two similar pyramids with volumes of 64 cubic feet and 8 cubic 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.