Heron’s formula: area = triangle pqr has sides measuring 9 feet and 10 feet and a perimeter of 24 feet. what is the area of triangle pqr? round to the nearest square foot.

Given the graph below state whether or not the relation is a function, and give the domain and range.

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

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?