The coordinates of centroid are: (10/3, 3)
Step-by-step explanation:
The formula for calculating centroid of a triangle is:

Here (x1,y1) are the coordinates of first vertex
(x2,y2) are the coordinates of second vertex
(x3,y3) are the coordinates of third vertex
Given:
G(-2,5) = (x1,y1)
H(6,5) =(x2,y2)
J(6,-1) = (x3,y3)
Let I be the centroid of the triangle
Putting the values in the formula

The coordinates of centroid are: (10/3, 3)
Keywords: Centroid, Triangle
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Answer:
x+4
It's too short. Write at least 20 characters to explain it well.
I am pretty sure that the correct answer would be 13
since angle bisector divides the opposite side in same ratio of other two sides
18/12=12/x
x=12×12/18
x=8