To find the midpoint \( M \) of the line segment with endpoints \( A(-1.4, 2.5) \) and \( B(2.6, -1.5) \), we use the midpoint formula:
\[ M = \left( \frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2} \right) \]
Where \( A(x_1, y_1) \) and \( B(x_2, y_2) \).
Substituting the coordinates of points \( A \) and \( B \):
\[ M = \left( \frac{-1.4 + 2.6}{2}, \frac{2.5 + (-1.5)}{2} \right) \]
Calculating the x-coordinate:
\[ \frac{-1.4 + 2.6}{2} = \frac{1.2}{2} = 0.6 \]
Calculating the y-coordinate:
\[ \frac{2.5 - 1.5}{2} = \frac{1.0}{2} = 0.5 \]
Thus, the coordinates of the midpoint \( M \) are:
\[ M(0.6, 0.5) \]
Rounded to the tenth place, the midpoint of segment \( AB \) is \( (0.6, 0.5) \).