Two whole numbers have a least common multiple of 60, each number is less than or equal to 12, the greatest common factor of the two numbers is 2

What is the common difference in the following arithmetic sequence 7,3,-1,-5

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

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?