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bgazan57
@bgazan57
January 2021
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Bonjour ::::::::::: on peut m'aider :::::::::::::::::::::::: juste l'exercice 2 et 3 le reste ces bon j'ai fait mes les deux je comprend pas MERCI :::::::::::::::::::::::::::::::::::::::
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williambobe
Bonjour,
exo 2 :
il n'y a pas d'unités(cm, m...)
1)
AN/AC=AM/AB
=NM/CB
x/35 = 6/28
x = (6*35)/28 = 7,5
x =7,5
2)
AM/AB=AN/AC
=NM/BC
3/x = 2/39
x = (39*3)/2 = 58,5
x = 58,5
3)
IR/IK=IS/IJ
=RS/KJ
13/39 = x/(x+10)
39*x = 13(x+10)
39x = 13x+130
39x-13x = 130
x = 5
exo 3 :
(VP)//(KJ)
IV/IJ = IP/IK
=KJ/VP
2,5/3 =2/IK
2,5*IK = 3*2
2,5*IK = 6
IK = 6/2,5 = 2,4
2)
AN/AI
= AM/AP
= MN/IP
2/1,5 = 1,5/IP
IP = (1,5*1,5)/2 = 1,125
IP = 1,125
1 votes
Thanks 1
bgazan57
Je vous remercie beaucoup de votre aide. Bon dimanche
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Lista de comentários
exo 2 :
il n'y a pas d'unités(cm, m...)
1) AN/AC=AM/AB=NM/CB
x/35 = 6/28
x = (6*35)/28 = 7,5
x =7,5
2) AM/AB=AN/AC=NM/BC
3/x = 2/39
x = (39*3)/2 = 58,5
x = 58,5
3) IR/IK=IS/IJ=RS/KJ
13/39 = x/(x+10)
39*x = 13(x+10)
39x = 13x+130
39x-13x = 130
x = 5
exo 3 :
(VP)//(KJ)
IV/IJ = IP/IK=KJ/VP
2,5/3 =2/IK
2,5*IK = 3*2
2,5*IK = 6
IK = 6/2,5 = 2,4
2) AN/AI = AM/AP = MN/IP
2/1,5 = 1,5/IP
IP = (1,5*1,5)/2 = 1,125
IP = 1,125