Quiz interactif : Testez vos connaissances en mathématiques (4ème année secondaire)

Question 1 sur 10 10:00

[{"id":34153,"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 = 15","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":34154,"question":"La fonction f(x) = 2x + 3 est-elle linéaire ?","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. Ici, f(x) = 2x + 3 est affine, mais pas linéaire.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34155,"question":"Quel est le coefficient directeur de la droite d’équation y = -4x + 7 ?","option_a":"-4","option_b":"7","option_c":"4","option_d":"-7","option_e":"","option_f":"","bonne_reponse":"A","explication":"Dans l’équation y = ax + b, a est le coefficient directeur. Ici, a = -4.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34156,"question":"Dans un triangle rectangle, le carré de l’hypoténuse est égal à la somme des carrés des deux autres côtés. Vrai ou faux ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"C’est le théorème de Pythagore, une propriété fondamentale en géométrie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34157,"question":"Quelle est la médiane d’une série de données ?","option_a":"La valeur qui sépare la série en deux parties égales","option_b":"La moyenne des valeurs","option_c":"La valeur la plus fréquente","option_d":"La somme des valeurs","option_e":"","option_f":"","bonne_reponse":"A","explication":"La médiane est la valeur qui divise une série ordonnée en deux parties égales.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34158,"question":"L’équation x² - 6x + 9 = 0 admet-elle deux solutions réelles distinctes ?","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Le discriminant Δ = (-6)² - 4×1×9 = 0. L’équation admet une solution double (x = 3).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34159,"question":"Quel est l’angle au centre d’un cercle correspondant à un arc de 60° ?","option_a":"30°","option_b":"60°","option_c":"90°","option_d":"120°","option_e":"","option_f":"","bonne_reponse":"B","explication":"L’angle au centre est égal à la mesure de l’arc correspondant.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34160,"question":"La probabilité d’un événement impossible est égale à 1.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"La probabilité d’un événement impossible est 0, et celle d’un événement certain est 1.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34161,"question":"Quelle est la forme factorisée de x² - 9 ?","option_a":"(x - 3)(x + 3)","option_b":"(x - 9)(x + 1)","option_c":"(x - 3)²","option_d":"(x + 3)²","option_e":"","option_f":"","bonne_reponse":"A","explication":"x² - 9 est une différence de carrés : (x - 3)(x + 3).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":34162,"question":"Le centre de gravité d’un triangle est le point d’intersection de ses médianes.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Le centre de gravité est bien le point d’intersection des médianes d’un triangle.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]