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Mathematics, 19.01.2021 02:00 graciewyatt6833

1. Un coureur de demi-fond parcourt 850 m en 3 minutes 12 secondes. Calculer sa vitesse moyenne en m/s. Arrondir à l'unité. 2. Juliette est en voiture et roule à une vitesse moyenne de 120 km/h. a. Quelle distance parcourt-elle en 4 h 12 min ? b. Elle part de Givors à 16h12 et parcourt 319 km. A quelle heure arrive-t-elle ? Donner le résultat en heure et en minutes

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1. Un coureur de demi-fond parcourt 850 m en 3 minutes 12 secondes. Calculer sa vitesse moyenne en m...
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