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Arthurkostanian1
@Arthurkostanian1
May 2019
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Bonjour vous pouvais me aides svp
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calinizou
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Bonjour
1/pythagore
ab²+²c²=cb²
400²+300²=cb²
160000+90000=250000 donc racine carré de 250000=cb=500m
2/thalés
ac/ad=ab/ae=cb/de
ab+be=ae donc 400+2*400=1200m
donc 300/ad=400/1200=500/de
ad=1200*300:400=900m
de=1200*500:400=1500m
3/cd=ad-ac=900-300=600m
4/parcours total 400+500+600+1500=3000m
5/ vitesse moyenne
distance/temps
3000/11.3=265.49m/s
*veut dire multiplier
2 votes
Thanks 2
arthurkostanian1
merci beaucoup
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Verified answer
Bonjour1/pythagore
ab²+²c²=cb²
400²+300²=cb²
160000+90000=250000 donc racine carré de 250000=cb=500m
2/thalés
ac/ad=ab/ae=cb/de
ab+be=ae donc 400+2*400=1200m
donc 300/ad=400/1200=500/de
ad=1200*300:400=900m
de=1200*500:400=1500m
3/cd=ad-ac=900-300=600m
4/parcours total 400+500+600+1500=3000m
5/ vitesse moyenne
distance/temps
3000/11.3=265.49m/s
*veut dire multiplier