Autumnarb0810
Autumnarb0810 Autumnarb0810
  • 04-08-2021
  • Mathematics
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Please help me, What is the length of DE?

Please help me What is the length of DE class=

Respuesta :

jimrgrant1 jimrgrant1
  • 04-08-2021

Answer:

B

Step-by-step explanation:

The 2 triangles are similar, so the corresponding sides are in proportion, that is

[tex]\frac{DE}{XY}[/tex] = [tex]\frac{FD}{ZX}[/tex] , substitute values

[tex]\frac{DE}{9}[/tex] = [tex]\frac{8}{12}[/tex] ( cross- multiply )

12 DE = 72 ( divide both sides by 12 )

DE = 6 → B

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