A boat travels for three hours with a current of 3 mph and then returns the same distance against the current in four hours. What is
the boat's speed in calm water? How far did the boat travel one way?

Subtract 8 1/6 - 4 5/6 . simplify the answer and write as a mixed number.

Use the radius you found in part i (r=26.8 cm) with the surface area formula below to find the surface area of the sphere. show your work and round your answer to the nearest tenth. the surface area of a sphere: sa = 4πr^2 self note: 3.8.4

Ahighway between points a and b has been closed for repairs. an alternative route between there two locations is to travel between a and c and then from c to b what is the value of y and what is the total distance from a to c to b?