Discover Questions

Add or subtract. Simplify if possible:
7/a+8 +7/a^2-64? If you buy two raffle tickets and 200 are sold total, what are your odds of winning, assuming the raffle was an honest one? Multiply or divide. State any restrictions on the variables.
m^2/m+3 * m^2+4m+3/m^2+1m? What is the weight of 20 sheets of copier paper? Why didn’t you see a precipitate when you added Na2SO4to Cu(NO3)2? Explain briefly.?