Mathématiques 1ère année : Devoir de Contrôle 3-1 — Quiz d'évaluation

Question 1 sur 10 10:00

[{"id":27628,"question":"Quelle est la solution de l'équation 2x - 5 = 3 ?","option_a":"x = 1","option_b":"x = 4","option_c":"x = -1","option_d":"x = 2","option_e":"","option_f":"","bonne_reponse":"B","explication":"On ajoute 5 des deux côtés : 2x = 8, puis on divise par 2 : x = 4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27629,"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":27630,"question":"Quelle est la valeur de f(2) si f(x) = 3x + 1 ?","option_a":"f(2) = 5","option_b":"f(2) = 7","option_c":"f(2) = 6","option_d":"f(2) = 4","option_e":"","option_f":"","bonne_reponse":"C","explication":"On remplace x par 2 : f(2) = 3*2 + 1 = 7.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27631,"question":"L'aire d'un carré de côté 5 cm est de 25 cm².","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"L'aire d'un carré se calcule par côté × côté : 5 × 5 = 25 cm².","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27632,"question":"Quelle est la solution de l'inéquation 3x + 2 \u003E 11 ?","option_a":"x \u003E 3","option_b":"x \u003E 4","option_c":"x \u003C 3","option_d":"x \u003C 4","option_e":"","option_f":"","bonne_reponse":"A","explication":"On soustrait 2 : 3x \u003E 9, puis on divise par 3 : x \u003E 3.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27633,"question":"La médiatrice d'un segment est perpendiculaire à ce segment.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Par définition, la médiatrice d'un segment est une droite perpendiculaire au segment et passant par son milieu.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27634,"question":"Quelle est la valeur de 2³ ?","option_a":"6","option_b":"8","option_c":"4","option_d":"12","option_e":"","option_f":"","bonne_reponse":"B","explication":"2³ = 2 × 2 × 2 = 8.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27635,"question":"Un angle de 90° est appelé angle plat.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Un angle plat mesure 180°. Un angle de 90° est un angle droit.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27636,"question":"Quelle est la solution de l'équation x² - 4 = 0 ?","option_a":"x = 2","option_b":"x = -2","option_c":"x = 4","option_d":"x = 2 ou x = -2","option_e":"","option_f":"","bonne_reponse":"D","explication":"x² = 4 ⇒ x = 2 ou x = -2.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27637,"question":"La somme des angles d'un triangle est toujours égale à 180°.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"C'est une propriété fondamentale des triangles.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]