Mathématiques 9ème : Algèbre et Géométrie — Quiz de Révision

Question 1 sur 10 10:00

[{"id":60357,"question":"Quelle est la solution de l'équation 3x - 5 = 10 ?","option_a":"x = 5","option_b":"x = 3","option_c":"x = 15\/3","option_d":"x = 2","option_e":"","option_f":"","bonne_reponse":"A","explication":"3x - 5 = 10 → 3x = 15 → x = 5. C'est la solution de l'équation.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60358,"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 est valable uniquement pour les triangles rectangles.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60359,"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":"30 cm²","option_d":"26 cm²","option_e":"","option_f":"","bonne_reponse":"A","explication":"Aire = longueur × largeur = 8 × 5 = 40 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60360,"question":"Si un angle d'un triangle mesure 60° et un autre 50°, quelle est la mesure du troisième angle ?","option_a":"70°","option_b":"60°","option_c":"50°","option_d":"80°","option_e":"","option_f":"","bonne_reponse":"A","explication":"La somme des angles d'un triangle est 180°. 180 - 60 - 50 = 70°.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60361,"question":"L'équation x² - 4x + 4 = 0 a deux solutions distinctes.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"L'équation x² - 4x + 4 = 0 se factorise en (x - 2)² = 0, donc une seule solution : x = 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60362,"question":"Quelle est la solution de l'inéquation 2x + 3 \u003E 7 ?","option_a":"x \u003E 2","option_b":"x \u003E 4","option_c":"x \u003C 2","option_d":"x \u003E 5","option_e":"","option_f":"","bonne_reponse":"B","explication":"2x + 3 \u003E 7 → 2x \u003E 4 → x \u003E 2. La solution est x \u003E 2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60363,"question":"Un parallélogramme a des côtés opposés de même longueur.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Par définition, un parallélogramme a ses côtés opposés parallèles et de même longueur.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60364,"question":"Quelle est la valeur de l'expression 5(2x - 3) pour x = 4 ?","option_a":"25","option_b":"35","option_c":"40","option_d":"20","option_e":"","option_f":"","bonne_reponse":"B","explication":"5(2×4 - 3) = 5(8 - 3) = 5×5 = 25. La valeur est 25.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60365,"question":"Le périmètre d'un carré de côté 6 cm est de 24 cm.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Périmètre = 4 × côté = 4 × 6 = 24 cm. L'affirmation est vraie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":60366,"question":"Quelle est la solution de l'équation 4x + 1 = 2x + 9 ?","option_a":"x = 4","option_b":"x = 5","option_c":"x = 3","option_d":"x = 6","option_e":"","option_f":"","bonne_reponse":"B","explication":"4x + 1 = 2x + 9 → 2x = 8 → x = 4. La solution est x = 4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]