Question

Na figura abaixo, MN é paralela à base BC do triângulo ABC. *

10 pontos

x=10

x=25

x=15

x=20

x=5

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Answer 1

$\boxed{\begin{array}{l}\sf\dfrac{x}{10}=\dfrac{30}{12}\\\\\sf12x=300\\\sf x=\dfrac{300}{12}\\\\\sf x=25\end{array}}$