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sharon_penn
 2 years ago
What is the value of x in the diagram?
(1 point)
1/2
4/21
2
4
sharon_penn
 2 years ago
What is the value of x in the diagram? (1 point) 1/2 4/21 2 4

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tkhunny
 2 years 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
 2 years ago
Best ResponseYou've already chosen the best response.0can someone walk me through it?

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

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

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