5x - 2y = 18
-5x + 3y = -22

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?