Put the number by which one you answer and don't put nothing if you don't know it please

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

About 60% of the normal humanbeing's body weight is composed ofwater. how much of a 125 poundperson is water weight? f 72 pounds h 76 poundsg 75 pounds i 80 pounds

Which simplifys to a+ b? a-(1-b)+1 -(1-a)-b+1 (a--1) -1)+1