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Hanaana
@Hanaana
May 2019
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Merci d'avance à celui qui m'aidera
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trudelmichel
Verified answer
Bonjour,
quel temps a-t-il mis pour faire les 49km
T=49/70=7/10 heure
1 heure=60mn
7/10x60= 420/10=42mn
quelle distance a-t-il parcouru le seconde phase?
2h57=(2x60)+57=177mn
90km/h
90/60 km/mn
(90/60)x177=265 km
il a donc parcouru
49+265=314km
en
42+177= 219mn
V=D/T
v=314/219=1.43 km/mn
1.43x60=85.8km/h
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trudelmichel
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Hanaana
May 2019 | 0 Respostas
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Lista de comentários
Verified answer
Bonjour,quel temps a-t-il mis pour faire les 49km
T=49/70=7/10 heure
1 heure=60mn
7/10x60= 420/10=42mn
quelle distance a-t-il parcouru le seconde phase?
2h57=(2x60)+57=177mn
90km/h
90/60 km/mn
(90/60)x177=265 km
il a donc parcouru
49+265=314km
en
42+177= 219mn
V=D/T
v=314/219=1.43 km/mn
1.43x60=85.8km/h