Free points

who is stronger 1 or 2

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.)

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall