In order to use cpctc in a proof, what must you first prove?

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

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.