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{"id":134,"date":"2020-11-11T20:50:50","date_gmt":"2020-11-11T20:50:50","guid":{"rendered":"http:\/\/ms.iaca.fr\/?p=134"},"modified":"2021-10-04T07:44:03","modified_gmt":"2021-10-04T07:44:03","slug":"activite-1-2","status":"publish","type":"post","link":"http:\/\/ms.iaca.fr\/activite-1-2","title":{"rendered":"Activit\u00e9 1 : cin\u00e9ma et champ"},"content":{"rendered":"\n

Une carte d\u2019abonnement pour le cin\u00e9ma coute 12\u20ac, qui permet d\u2019avoir une entr\u00e9e au tarif de 5\u20ac.
Paulo pr\u00e9tend avoir d\u00e9pens\u00e9 77\u20ac cette ann\u00e9e pour le cin\u00e9ma combien de film a-t-il vu ?
Propose une m\u00e9thode de ton choix pour r\u00e9soudre ce probl\u00e8me<\/p>\n\n\n\n

<\/p>\n\n\n\n

M\u00e9thode 1 : compter :
> 1er place : 12+5 = 18\u20ac ;
> 2eme : 18+5 = 22\u20ac ;
> 3eme ..etc.. 13e : 77\u20ac

M\u00e9thode 2 soit x le nombre d\u2019entr\u00e9es
5x + 12 = 77 soit x= (77-12) \u00f7 5 = 13
<\/p>\n\n\n\n

Deux agriculteurs poss\u00e8dent des champs ayant un cot\u00e9 en commun de longueur inconnue. L\u2019un est en forme de carr\u00e9, l\u2019autre en forme de triangle rectangle de base 100m.<\/p>\n\n\n\n

Il faut utiliser les formules ci-dessous.
x\u00d7x=(100\u00d7x)\/2
x(x-50)=0
x=0 ou x=50<\/p>\n\n\n\n

Informations : aire d\u2019un carr\u00e9 : c\u00f4t\u00e9\u00d7c\u00f4t\u00e9 ; aire d\u2019un triangle : (base \u00d7 hauteur)\/2<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Une carte d\u2019abonnement pour le cin\u00e9ma coute 12\u20ac, qui permet d\u2019avoir une entr\u00e9e au tarif de 5\u20ac.Paulo pr\u00e9tend avoir d\u00e9pens\u00e9 77\u20ac cette ann\u00e9e pour le cin\u00e9ma combien de film a-t-il vu ?Propose une m\u00e9thode de ton choix pour r\u00e9soudre ce probl\u00e8me M\u00e9thode 1 : compter : > 1er place : 12+5 = 18\u20ac ; > … <\/p>\n