What is this formula used to calculate? a. radius b. compression ratio c. mass ratio d. volume

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.)

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Find the value of x for which the lines are parallel.