elizrdgz
elizrdgz elizrdgz
  • 17-12-2018
  • Mathematics
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O is the centroid. Find the value of x. (Sorry if u cant see the photo :/, but this is Geometry btw)

O is the centroid Find the value of x Sorry if u cant see the photo but this is Geometry btw class=

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jimthompson5910 jimthompson5910
  • 17-12-2018

Answer: x = 6

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Explanation:

The medians of a triangle meet up at the centroid in such a way that they cut each other at a ratio of 2:1, meaning that one part of the median is twice as long as the other. In this case, MO is two times longer than OP, so,

OP = 2*MO

and

MP = MO + OP

MP = MO + 2*MO .... replace OP with 2*MO

MP = 3*MO

9x-24 = 3*(x+4) ... plug in the given expressions

9x-24 = 3x+12

9x-3x = 12+24

6x = 36

x = 36/6

x = 6

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