PREMIÈRE PARTIE (12 points)

Zone de Texte: 0,5 point


1 point


1 point

1 point
Exercice 1 : 3,5 points

Exercice 2 : 2 points

 

Vitesse de le lumière en km/s

Taille d’un atome en m

Pression atmosphérique en hectopascal

Notation scientifique

3 ´ 105

9 ´ 10-10

1,013 ´ 103

Ecriture décimale

300 000

0,0000000009

1 013

 

Exercice 3 : 3,5 points

a) 11 404 s                                                                                                                                             1 point

b) 42 195 m                                                                                                                                         0,5 point

c)  3,7 m/s                                                                                                                                           1 point

d) 13,32 km /h                                                                                                                                        1 point

 

Exercice 4 : 3 points

a) 4 x – 3 = 10 à x =  (ou 3,25)                         b) 7x – 4 = 2 x + 6 à 5 x = 10 à x =  = 2

 

c)  =  donc x = 10

 

DEUXIÈME PARTIE

Partie A : Statistiques (12 points)

Exercice 1 : 6 points

a)          2,5 points  (Total : 0,5 point ; fréquences : 1 point ; angle : 1 point)

 

Catégorie socioprofessionnelle

Nombre de personnes

Fréquences en pourcentage

Angle en degré entier

Agriculteurs exploitants

44

1,9

7

Artisans, commerçants, chefs d’entreprises

84

3,6

13

Cadres et professions intellectuelles sup.

47

2,0

7

Professions intermédiaires

152

6,6

24

Employés

256

11,1

40

Ouvriers

496

21,5

77

Retraités

576

24,9

90

Sans activités professionnelle

656

28,4

102

Total

2 311

100

360


b)  (2,5 points, - 1 s’il n’y a pas de légende)

 
 

 

 

 

 

 

 

 

 

 

 

 


c)  Il y a 1 079 personnes qui ont un emploi.

Soit 46,7 % de personnes qui ont un emploi.                                                                                   1 point

 

 

Exercice 2 : 6 points

                                                                     0,5 point                       1 point                           1 point

Montant des commandes en €

Nbre de commandes

Centre de classes

Centres de classes

x effectifs

[ 0 ; 30 [

50

15

750

[ 30 ; 60 [

225

45

10 125

[ 60 ; 90 [

600

75

45 000

[ 90 ; 120 [

375

105

39 375

[ 120 ; 150 [

125

135

16 875

[ 150 ; 180 [

75

165

12 375

TOTAL

1 450

 

124 500

 

a)  275 commandes.                                                                                                                              1 point

b)  575 commandes.                                                                                                                              1 point

c)  85,86 €.                                                                                                                       1 point pour le calcul

                                                                                                               0,5 point pour l’arrondi

 

 

Partie B : Géométrie (12 points)

 

Exercice 1 : 2 points

 

      1                  2

 

         1                 2

 

       1                  2

 

      1                  2

 

 

 

 

 

 

 


 

 

           I : translation              II : symétrie centrale               III : rotation                 IV : symétrie axiale

                                                     ou rotation                                                             ou translation

 


Exercice 2 : 4 points

 

1) a)  Tracé du segment [BC]                                                                                                             0,5 point

Tracé du segment [AB]                                                                                                             0,5 point

Tracé de la droite                                                                                                                       0,5 point

 

b) Placement du point D                                                                                                                0,5 point

 

2) AD » 6,5 cm (± 0,1)                                                                                                                        0,5 point

 

3) Trapèze rectangle                                                                                                                           0,5 point

 

4) Aire = 29 cm2 ou tout résultat cohérent avec la réponse à la question 2)                                                      1 point

 

 

Exercice 3 : 6 points

 

1) C’est la hauteur issue du sommet L                                                                                              0,5 point

 

2) Le triangle ILE n’est pas rectangle                                                                                                 1,5 point

 

3) LH  4,33 cm                                                                                                                                  2 points

 

4) IH ≈ 5,5 cm                                                                                                                                      1,5 point

    HE = 2,5 cm                                                                                                                                    0,5 point

 

 

Troisième partie (12 points)

 

1) a) 10 L                                                                                                                                             0,5 point

    b) 40 L                                                                                                                                             0,5 point

 

2) 20 L                                                                                                                                                    1 point

 

3) 1 000 km                                                                                                                                         0,5 point

 

4)  a)  5 L                                                                                                                                                 1 point

b)   900 km                                                                                                                                          1 point

c)   100 km                                                                                                                                          1 point

 

5) y = 50 – 0,05 x                                                                                                                                   1 point

 

6) a)                                                                                                                                                     1,5 point

x

0

100

200

1 000

f (x)

50

45

40

0

 

    b) affine                                                                                                                                              1 point

    c) tracé                                                                                                                                            1,5 point

 

7) f (x) = 5                                                                                                                                              1 point

 

C’est la quantité d’essence restant dans le réservoir lorsque le véhicule a parcouru 900 km.         0,5 point

ou lorsque le voyant du témoin d’essence s’allume.