Connie owes tax equaling 10 percent of all her earnings. Help her write an equation to determine how much she owes in taxes (T) out of her total earnings (E).

You are cycling around europe with friends. a cycling festival is starting soon in barcelona. it will take 4.5 hours to cycle there. how many minutes in total is this?

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers