For triangle ABC, M and N are the midpoints of the indicated sides. If MN = x + 2 and BC = 4x - 12, find the length of BC.

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
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Chapter2: Functions And Graphs
Section2.2: The Rectangular Coordinate System And Graphing Lines
Problem 95E: In the illustration, point M is the midpoint of the hypotenuse of right triangle AOB. Show that the...
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For triangle ABC, M and N are the midpoints of the indicated sides. If MN = x + 2 and BC = 4x - 12, find the length of BC. 

* not sure if I need to put a picture of the triangle, it's a regular triangle with a line in the middle indicating MN are midpoints 

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