Question

Va rog am nevoie dau 50 de puncte​

Answer 1

Răspuns:

Explicație pas cu pas:

aplicam teorema fundamentala a asemanarii :

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a)

ΔADE≈ΔABC

AE/AC=ED/BC

10/x= 8/14

8x= 14*10

8x=140

x= 140:8

x= 17,5 cm

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b)

ΔCDE≈ΔCAB

(15-x) /15 =6⁽²/10⁽²

(15-x)/15=3/5

5*(15-x)=15*3

75-5x= 45

5x= 75-45

5x=30

x= 30:5

x= 6 cm

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c)

ΔCPQ≈ΔCAB

x/ (x+16) = 6⁽⁶/18⁽⁶

x/(x+16)=1/3

3*x=x+16

3x-x= 16

2x=16

x= 16:2

x= 8cm