What is the area of trapezoid abcd with bases ab and cd if ab=10

From which college can you earn an associate's degree a. a four-year college b. a community college c. a vocational college d. a public university

What kinds of antigens are found on the rbcs of a person with a+ blood

Two technicians are discussing how to test a car's exhaust by holding a small piece of paper within an inch of the tailpipe mouth. technician a says that if the paper is vibrating due to a "puffing" output from the tailpipe, this signals a smoothly running engine. technician b says that if the paper is being drawn toward the tailpipe, this could indicate burned exhaust valves. who is correct? a. technician b b. both technicians a and b c. technician a d. neither technicians a or b