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

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

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

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

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

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