Answer:
Explanation:
It's important to know that the centroid is always two-thirds of the median. Which means
Which means .
But, the centroid has always the same distance from each vertex, which means
Therefore, BG is 10 units long.
it's 15 on edge
basically, you want to solve for x and substitute it for 2x+3,
Solving for x is
5x=2+18
3x=18
x=6
now getting GB
2(6)+3
12+3
15
Hope that helps
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