In what situations (if any) is Heron’s formula useful for finding the area of a triangle.

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Afootball is throw by a quarterback to a receiver