Answer all 4 questions for 20 pts

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Asap its important using the information in the customer order, determine the length and width of the garden. enter the dimensions. length: feetwidth: feet

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.