This figure shows circle z with chords ab and rs . mar=55° mrb=66° ab=8 m rs=8 m what is mrs?

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

Explain how you might determine the rate of weathering on a sample rock

How are students who take the writing portion of accuplacer graded?