Answer:

Explanation:
The median from B intersects the midpoint of AC
Find the midpoint using the midpoint formula
midpoint = [ 0.5(1 - 5), 0.5(- 1 + 3) ] = (- 2, 1 )
Calculate the length using the distance formula
d = √ (x₂ - x₁ )² + (y₂ - y₁ )²
with (x₁, y₁ ) = - 2, 1 ) and (x₂, y₂ ) = (0, 4 )
d =

=

=
=
≈ 3.6 ( to 1 dec. place )