Quiz Mathématiques — 9ème année : Algèbre & Géométrie

Question 1 sur 10 10:00

[{"id":27368,"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":27369,"question":"Le théorème de Pythagore s'applique uniquement aux triangles rectangles.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le théorème de Pythagore énonce que dans un triangle rectangle, le carré de l'hypoténuse est égal à la somme des carrés des deux autres côtés.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27370,"question":"Quelle est l'aire d'un rectangle de longueur 8 cm et de largeur 5 cm ?","option_a":"40 cm²","option_b":"13 cm²","option_c":"26 cm²","option_d":"30 cm²","option_e":"","option_f":"","bonne_reponse":"A","explication":"L'aire d'un rectangle se calcule par la formule : longueur × largeur = 8 × 5 = 40 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27371,"question":"Résoudre l'inéquation : 2x + 3 \u003E 7.","option_a":"x \u003E 2","option_b":"x \u003E 5","option_c":"x \u003C 2","option_d":"x \u003C 5","option_e":"","option_f":"","bonne_reponse":"A","explication":"Pour résoudre 2x + 3 \u003E 7, on soustrait 3 : 2x \u003E 4, puis on divise par 2 : x \u003E 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27372,"question":"Un cube a une arête de 4 cm. Quel est son volume ?","option_a":"64 cm³","option_b":"16 cm³","option_c":"48 cm³","option_d":"12 cm³","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le volume d'un cube se calcule par la formule : arête³ = 4³ = 64 cm³.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27373,"question":"La formule A = πr² permet de calculer l'aire d'un cercle.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"La formule A = πr² est bien celle de l'aire d'un cercle, où r est le rayon.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27374,"question":"Quelle est la solution de l'équation 2(x - 3) = 8 ?","option_a":"x = 7","option_b":"x = 5","option_c":"x = 11","option_d":"x = 4","option_e":"","option_f":"","bonne_reponse":"A","explication":"Pour résoudre 2(x - 3) = 8, on divise par 2 : x - 3 = 4, puis on ajoute 3 : x = 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27375,"question":"Un parallélogramme a une base de 6 cm et une hauteur de 4 cm. Quelle est son aire ?","option_a":"24 cm²","option_b":"10 cm²","option_c":"12 cm²","option_d":"16 cm²","option_e":"","option_f":"","bonne_reponse":"A","explication":"L'aire d'un parallélogramme se calcule par la formule : base × hauteur = 6 × 4 = 24 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27376,"question":"La somme des angles d'un triangle est toujours égale à 180 degrés.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Dans un triangle, la somme des trois angles est toujours égale à 180°, c'est une propriété fondamentale.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27377,"question":"Quelle est la valeur de x dans l'équation 5x\/2 = 10 ?","option_a":"x = 4","option_b":"x = 5","option_c":"x = 20","option_d":"x = 2","option_e":"","option_f":"","bonne_reponse":"C","explication":"Pour résoudre 5x\/2 = 10, on multiplie par 2 : 5x = 20, puis on divise par 5 : x = 4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]