Quiz de révision : Algèbre et Géométrie pour la 9ème année

Question 1 sur 10 10:00

[{"id":31538,"question":"Quelle est la solution de l'équation 3x + 5 = 20 ?","option_a":"x = 5","option_b":"x = 15","option_c":"x = 10","option_d":"x = -5","option_e":"","option_f":"","bonne_reponse":"A","explication":"3x + 5 = 20 → 3x = 15 → x = 5. La solution est x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":31539,"question":"Le périmètre d'un rectangle de longueur 8 cm et de largeur 3 cm est de 22 cm.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Périmètre = 2 × (longueur + largeur) = 2 × (8 + 3) = 22 cm. L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":31540,"question":"Quelle est l'aire d'un triangle de base 6 cm et de hauteur 4 cm ?","option_a":"12 cm²","option_b":"24 cm²","option_c":"10 cm²","option_d":"8 cm²","option_e":"","option_f":"","bonne_reponse":"A","explication":"Aire = (base × hauteur) \/ 2 = (6 × 4) \/ 2 = 12 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":31541,"question":"Dans un triangle rectangle, si les côtés de l'angle droit mesurent 3 cm et 4 cm, quelle est la longueur de l'hypoténuse ?","option_a":"5 cm","option_b":"7 cm","option_c":"6 cm","option_d":"4 cm","option_e":"","option_f":"","bonne_reponse":"A","explication":"D'après le théorème de Pythagore : hypoténuse² = 3² + 4² = 9 + 16 = 25 → hypoténuse = 5 cm.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":31542,"question":"La solution de l'inéquation 2x - 7 \u003E 1 est x \u003E 4.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"2x - 7 \u003E 1 → 2x \u003E 8 → x \u003E 4. L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":31543,"question":"Quelle est la valeur de x dans l'équation 5(x - 2) = 3x + 10 ?","option_a":"x = 10","option_b":"x = 5","option_c":"x = 0","option_d":"x = 15","option_e":"","option_f":"","bonne_reponse":"A","explication":"5x - 10 = 3x + 10 → 2x = 20 → x = 10.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":31544,"question":"L'aire d'un cercle de rayon 3 cm est de 9π cm².","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Aire = π × rayon² = π × 3² = 9π cm². L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":31545,"question":"Quelle est la solution de l'équation 4x + 3 = 2x + 11 ?","option_a":"x = 4","option_b":"x = 7","option_c":"x = 2","option_d":"x = 5","option_e":"","option_f":"","bonne_reponse":"A","explication":"4x + 3 = 2x + 11 → 2x = 8 → x = 4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":31546,"question":"Le périmètre d'un carré de côté 5 cm est de 20 cm.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Périmètre = 4 × côté = 4 × 5 = 20 cm. L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":31547,"question":"Quelle est la valeur de x dans l'équation 7x - 5 = 3x + 15 ?","option_a":"x = 5","option_b":"x = 10","option_c":"x = 7","option_d":"x = 3","option_e":"","option_f":"","bonne_reponse":"A","explication":"7x - 5 = 3x + 15 → 4x = 20 → x = 5.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]