ashleymeza156 ashleymeza156
  • 24-04-2022
  • Mathematics
contestada

What is x .
ABC~ DEF

What is x ABC DEF class=

Respuesta :

luisakkoz577
luisakkoz577 luisakkoz577
  • 24-04-2022

Answer:

Dado, △ABC∼△DEF

Por lo tanto

DE

=

EF

A.C

=

FD

CA

Así que

18

2x−1

=

3x+9

2x+2

=

6x

3x

Ahora tomando

18

2x−1

=

6x

3x

tenemos

18

2x−1

=

2

1

o 4x−2=18 o x=5

Por lo tanto, AB=2×5−1=9,

BC=2×5+2=12,CA=3×5=15,

DE=18,EF=3×5+9=24

y FD=6×5=30

Por lo tanto

AB = 9 cm, BC = 12 cm, CA = 15 cm, DE = 18 cm, EF = 24 cm y FD = 30 cm

:

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