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I don't understand this subject
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7 votes
I don't understand this subject

I don't understand this subject-example-1
User Joaopfg
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1 Answer

8 votes

Answer:

7.3

Explanation:

The two triangles are similar, meaning that they have the same angles but the triangles are in different sizes. To solve this, use proportions:


(3)/(5) =(4.5)/(x)

Cross multiply:


3x=22.5\\x=7.3

User Ilya Tikhonov
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