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Mathematics 17 Online
OpenStudy (anonymous):

HELPPPPPPPPPPPPPPP !

OpenStudy (anonymous):

Ask! We are here to help you!

OpenStudy (anonymous):

Solve for x

OpenStudy (eyust707):

This is similar triangles!! just like the last one

OpenStudy (eyust707):

lets separate them so you can see them better...

OpenStudy (eyust707):

|dw:1342551383155:dw|

OpenStudy (eyust707):

Since the triangles are similar we know that they are the same shape just one of them has been enlarged

OpenStudy (eyust707):

This means that a proportionality exists between the two triangles and we can make a comparison to solve for x... Basically since they gave us how much bigger one side got, we can figure how much bigger they all got

OpenStudy (eyust707):

first of all tho, we need to simplify the left side of the big triangle

OpenStudy (eyust707):

Whats x -3 + 12 simplify to?

OpenStudy (anonymous):

um hold on

OpenStudy (anonymous):

9

OpenStudy (eyust707):

yes x + 9

OpenStudy (eyust707):

So this whole side right here is x + 9 |dw:1342552128057:dw|

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