Discover Questions

If the class average is an 82 out of 100, with 74 students attending the class, how many students failed? A ball of yarn weighs 250 grams. How many yards or meters does it have? (1/1+y^2+cos(x)-2xy)dy/dx=y(1)=0? Is there a rule to whether put acid or base reactant first in the chemical equation? I have a 91.6 percent in my class, and how well do I have to do on my finals (13percent) to maintain at least a 90 percent?