A freight travels 20 miles. It goes 3 mph faster on the return journey than on the original journey. The trip there and back takes 10 hours. How fast did the train travel on the original
journey? How fast did the train travel on the return journey?

Use the distributive property -7(-2x+u-2)

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected

Haquira is baking cookies to put in packages for a fundraiser. shaquira has made 8686 86 chocolate chip cookies and 4242 42 sugar cookies. shaquira wants to create identical packages of cookies to sell, and she must use all of the cookies. what is the greatest number of identical packages that shaquira can make?