Question

Calcule as medidas x e y indicadas na figura, sendo MN // BC: *



a)x = 5 e y = 12

b)x = 6 e y = 8

c)x = 5 e y = 6

d)x = 4 e y = 12

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Answer 1

Resposta:

b) x = 6 e y = 8

Explicação passo-a-passo:

Boa tarde!!

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$\frac{x}{10} = \frac{9}{18} = \frac{4}{y}$

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$\frac{x}{10} = \frac{9}{18}$                      

$18x = 90\\\\x = \frac{90}{18} \\\\x = 5$  

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$\frac{4}{y} = \frac{9}{18}$

$9y = 72\\\\y = \frac{72}{9} \\\\y = 8$

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