If a(0, 0) and b(2, 5), find ab. if necessary, submit your answer as a decimal to the nearest tenth. (remember: ab means "the distance between points a and b.")

To determine the distance between two points, we use the equation,
                                   distance = √(x₂ - x₁)² + (y₂ - y₁)²
Substituting the known values for the abscissa and ordinates of the points,
                                distance = √(0 - 2)² + (0 - 5)² = √29 ≈ 5.39 
Therefore, the distance between these two points is approximately equal to 5.39.