Which expression is equivalent to (-7m^4+15m^3-12m^2)+(3m^5-12m^4-7m^ 3)/m-6

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Mike wants to make meatloaf. his recipe uses a total of 8 pounds of meat. if he uses a 3 to 1 ratio of beef to pork, how much pork will he use? enter your answer as a mixed number in simplest terms.