lukasmana72
lukasmana72 lukasmana72
  • 25-01-2021
  • Mathematics
contestada

Can somebody help me with this question. Will mark brainliest.

Can somebody help me with this question Will mark brainliest class=

Respuesta :

jimrgrant1 jimrgrant1
  • 25-01-2021

Answer:

x = 14

Step-by-step explanation:

The triangles are similar, so the ratios of corresponding sides are equal, that is

[tex]\frac{DF}{AC}[/tex] = [tex]\frac{EF}{BC}[/tex] , substitute values

[tex]\frac{x}{21}[/tex] = [tex]\frac{18}{27}[/tex] ( cross- multiply )

27x = 378 ( divide both sides by 27 )

x = 14

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