Question

Ma ajuta cineva la 5?

Answer 1

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Answer 2

$\overrightarrow{AB} +2\overrightarrow{AC} = \overrightarrow{O} \\ \\ Din figura, reiese ca |\overrightarrow{BC}| = 3|\overrightarrow{AC}| \Rightarrow BC = 3AC \\ \\ \Rightarrow \dfrac{BC}{AC} = \dfrac{3AC}{AC} = 3$