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Sphinxa [80]
3 years ago
9

Bonjour, je suis en 4e et j’aimerais que vous m’aidiez avec cette feuille d’exercice s’il vous plaît ? (en précisent vos réponse

s).
Merci d’avance.

Mathematics
1 answer:
Alinara [238K]3 years ago
3 0

Step-by-step explanation:

1. Soit

T = le coût d'un ticket

5T + 1.8 = 35

T = (35-1.8)/5 = 6.64

On ne sait pas le coût d'un ticket de tramway! :(

2.

a.

1 h : 60 min

x : 18

x = 1*18/60 = 0.3, ou 0.3h

b. => 1h18m = 1.3h

3. 16 L : 4 h

a.

x L : 365*24

x = 365*24 * 16/4 = 35040 L

b.

1 m^3 = 1000 L : 5.2 euros

35040 L : y euros

y = 5.2*35040/1000 = 182.21 euros (au centième)

4.

a. Voir graphique ci-attachée.

b. On voit bien que tous les points tombent sur la droite passant par l'origine, donc la relation est linéaire, ou proportionnelle.

c. La hauteur requise pour 270L est de 100 cm, approximativement, selon la graphique.

Notez la ligne bleue horizontale.

d. L'équation de la capacité (C) versus la hauteur (h) est

C(h) = (8/3)h

Pour C=270, 270 = (8/3)h  => h=270*(3/8) = 101.25

5. et plus

Désolé, on vous conseil de soumettre une question de 4 parties ou moins.

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Step-by-step explanation:

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The alternative hypothesis is

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it is a two tailed test

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For old dough

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The pooled proportion, pc is

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p value = 0.337

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This system of equations has no solution.

Step-by-step explanation:

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2x + 4(-\frac{1}{2}x + 3) = 10

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Since the variables cancel out and 12 ≠ 10, there are no solutions to this system.  

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