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Cv12
@Cv12
May 2019
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Bonsoir j'aurai besoin d'aide pour les exercices 19&20 ci-dessous, merci d'avance
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Jadoune2003
Ex 19 :
3+10+8+2+2 = 25
3×1+10×2+8×3+2×4+2×5 = 65
65÷25 = 2,6
Le nombre moyen d'enfants par famille est de 2,6.
Ex 20 :
a. 1,8×3+1,9×5+2×23+2,1×15+2,2×3+2,3×1 = 57,53
57,53÷(3+5+23+15+3+1) = 1,15
L'épaisseur moyenne des cinquantes planches est de 1,15 mm.
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Ex 2 je n'ai rien compris merci d'avance !
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Lista de comentários
3+10+8+2+2 = 25
3×1+10×2+8×3+2×4+2×5 = 65
65÷25 = 2,6
Le nombre moyen d'enfants par famille est de 2,6.
Ex 20 :
a. 1,8×3+1,9×5+2×23+2,1×15+2,2×3+2,3×1 = 57,53
57,53÷(3+5+23+15+3+1) = 1,15
L'épaisseur moyenne des cinquantes planches est de 1,15 mm.