Answer:
x = 46
Explanation:
Assuming DE is an angle bisector , then it divides the opposite side into segments that are proportional to the other 2 sides, that is
=
, substitute values
=
( cross- multiply )
63.8(x + 4) = 3190 ( divide both sides by 63.8 )
x + 4 = 50 ( subtract 4 from both sides )
x = 46