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menel
@menel
June 2021
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Bonsoir, aider moi svp sur l'exercice 82. Cela fait des jours que j'essaye et je n'arrive pas. Merciiiii beaucoooupp !!!!!!
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winner123
Verified answer
Bonsoir
AE/AT = AF/AS = EF/TS
3/3 +x = 4/7
= 4 ( 3 +x) = 3 x 7
= 12 + 4 x = 21
4x = 21 - 12
4x = 9
x = 9/4 donc = FS = 2.25
y/y +2 = 4/7
4( y +2) = 7 y
4y + 8 = 7y
4 y - 7y = - 8
- 3 y = -8
y = 8/3 ≈ 2.6
AE ≈2.6
1 votes
Thanks 1
menel
merciii beaucoup vous me sauver la vie !!!
menel
donc en gros on doit faire le théorème de Thalès en ajoutant les lettres
winner123
as tu compris ? ce serait mieux que te sauver la vie pour si peu
menel
oui je pense
winner123
oui tu appliques Thalès tout simplement
menel
d'accord mercii beaucoup
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Lista de comentários
Verified answer
BonsoirAE/AT = AF/AS = EF/TS
3/3 +x = 4/7
= 4 ( 3 +x) = 3 x 7
= 12 + 4 x = 21
4x = 21 - 12
4x = 9
x = 9/4 donc = FS = 2.25
y/y +2 = 4/7
4( y +2) = 7 y
4y + 8 = 7y
4 y - 7y = - 8
- 3 y = -8
y = 8/3 ≈ 2.6
AE ≈2.6