2/3÷[5÷(1/2+1)-3(1/2-1/4)]

To complete your spring schedule, you must add calculus and physics. at 9: 30, there are three calculus sections and two physics sections; while at 11: 30, there are two calculus sections and three physics sections. how many ways can you complete your schedule if your only open periods are 9: 30 and 11: 30?

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

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