Quiz Mathématiques : Nombres, Équations et Géométrie — 1ère Année Secondaire

Question 1 sur 10 10:00

[{"id":20608,"question":"Quelle est la solution de l'équation 3x - 5 = 10 ?","option_a":"x = 5","option_b":"x = 15\/3","option_c":"x = 5\/3","option_d":"x = 15","option_e":"","option_f":"","bonne_reponse":"A","explication":"Pour résoudre 3x - 5 = 10, on ajoute 5 des deux côtés : 3x = 15, puis on divise par 3 : x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":20609,"question":"Un triangle rectangle a un angle de 30°. Quelle est la mesure de l'autre angle non droit ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"La somme des angles d'un triangle est 180°. Si un angle est 90° et un autre 30°, le troisième est 180° - 90° - 30° = 60°.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":20610,"question":"Quelle est la forme développée de (x + 2)(x - 3) ?","option_a":"x² - x - 6","option_b":"x² + x - 6","option_c":"x² - 6x + 6","option_d":"x² - x + 6","option_e":"","option_f":"","bonne_reponse":"B","explication":"En développant (x + 2)(x - 3), on obtient x² - 3x + 2x - 6 = x² - x - 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":20611,"question":"L'aire d'un rectangle de longueur 8 cm et de largeur 5 cm est de :","option_a":"13 cm²","option_b":"40 cm²","option_c":"26 cm²","option_d":"30 cm²","option_e":"","option_f":"","bonne_reponse":"B","explication":"L'aire d'un rectangle se calcule par longueur × largeur = 8 × 5 = 40 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":20612,"question":"La fonction f(x) = 2x + 1 est une fonction affine.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Une fonction affine s'écrit sous la forme f(x) = ax + b, ce qui est le cas ici avec a = 2 et b = 1.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":20613,"question":"Quel est le résultat de √(16) + √(9) ?","option_a":"7","option_b":"5","option_c":"10","option_d":"25","option_e":"","option_f":"","bonne_reponse":"A","explication":"√(16) = 4 et √(9) = 3, donc √(16) + √(9) = 4 + 3 = 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":20614,"question":"Un cercle a un rayon de 3 cm. Quelle est sa circonférence (arrondie au dixième) ?","option_a":"18,8 cm","option_b":"9,4 cm","option_c":"28,3 cm","option_d":"6,2 cm","option_e":"","option_f":"","bonne_reponse":"A","explication":"La circonférence d'un cercle se calcule par 2πr = 2 × 3,14 × 3 ≈ 18,8 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":20615,"question":"L'inéquation 2x - 7 \u003E 3 a pour solution :","option_a":"x \u003E 5","option_b":"x \u003C 5","option_c":"x \u003E 2","option_d":"x \u003C 2","option_e":"","option_f":"","bonne_reponse":"A","explication":"Pour résoudre 2x - 7 \u003E 3, on ajoute 7 : 2x \u003E 10, puis on divise par 2 : x \u003E 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":20616,"question":"Le volume d'un cube de côté 4 cm est de :","option_a":"16 cm³","option_b":"64 cm³","option_c":"32 cm³","option_d":"8 cm³","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le volume d'un cube se calcule par côté³ = 4 × 4 × 4 = 64 cm³.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":20617,"question":"La représentation graphique d'une fonction linéaire passe toujours par l'origine.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Une fonction linéaire s'écrit f(x) = ax, donc f(0) = 0 : elle passe toujours par l'origine (0,0).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]