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tkhunnyBest ResponseYou've already chosen the best response.0
If those red arrows mean those lines are parallel, we have some similar triangles (AAA). Where does that leave us?
 one year ago

sharon_pennBest ResponseYou've already chosen the best response.0
can someone walk me through it?
 one year ago

DirectrixBest ResponseYou've already chosen the best response.1
Theorem: If a line is parallel to one side of a triangle and intersects the other two, then it divides them proportionately.
 one year ago

DirectrixBest ResponseYou've already chosen the best response.1
That means: 9 is to (4x  2) as 12 is to (3x + 2)
 one year ago

DirectrixBest ResponseYou've already chosen the best response.1
Or, 9/ (4x  2) = 12/ (3x + 2) Cross multiply and solve for x.
 one year ago

DirectrixBest ResponseYou've already chosen the best response.1
To help you get started, 9(3x + 2) = 12(4x  2)
 one year ago
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