It takes Erin 4 hours to build a statue and Cathy 6 hours to do the same job. How many hours would it take them to build a statue working together?

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

Jonah runs 3/5 miles on sunday and 7/10 mile on monday. he uses the model to find that he can ran a total of 1 mile . what mistake does jonah make