B. You do 6,000 J of work to pull a sled up a ramp. After you reach the top, you discover that the sled had 3,600 J
of work done on it. What is the efficiency of the ramp?

Ray ce is the angle bisector of zacd, which statement about the figure must be true? mzecd-mzecb mzace « 4mzacd zace - zdcb zecd zacd save and exit

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis