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lovelife999
@lovelife999
June 2021
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Développer et réduire les expressions suivantes :
A=1) A= (4x-3)²
2) B= ( 2x-5)(2x+5)
3) (1+6x)²
4) D= (-2x+7)(5x-3)
5) E= (3-4x)(x² - 4x +1)
merci beaucoup
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lovelife999
June 2021 | 0 Respostas
ULTRA URGENT!!!!!!!!! exo 1 : Calculer les expressions A et B en donnant le résultat sous forme d'un nombre entier ou d'une fraction..( √ <---- racine carré ) A = √75 / √3 B = √6 / 30 Exo 2 : on considère le triangle suivant où les longueurs sont en cm. AB : 2√5 BC : √45 AC : 5√51. Calculer une valeur appochée au centième du périmètre de ce triangle. 2. Calculer la valeur exacte de ce périmètre en donnant le résultat sous la forme a√5MERCI ENORMEMENT A TOUS CEUX QUI VONT M'AIDER :p merci merci je n'y arrive vraiment pas ! :(
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lovelife999
June 2021 | 0 Respostas
Bonjour , je ne comprend pas cet exercice quelqu'un peux m'aider ? :) En 2013, 85 adhérents d'un club nautique faisaient de l'optimiste. L'activité a beaucoup de succès et en 2014 le nombre d'adhérents faisait de l'optimiste a augmenté de 12%. La présidente du club est certaine q'une telle augmentation aura encore lieu pour l'année 2015. Combien, ce club nautique , aura t'il de personnes faisant de l'optimiste en 2015, selon la présidente ? on m'as déja dit que c'est 2014:85(1+12/100) = 95 mais sur ma calculatrice je ne trouve pas 95 mais 23 et 2015:95(1+12/100)= 106 et ce n'est pas égal a 106 sur ma calculatrice que faire j'ai vraiment besoin d'aide c'est urgent
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lovelife999
June 2021 | 0 Respostas
Help help pour demain ..Noé cueille des prunes. Il gagne 3,20 euros par panier rempli.a) combien gagne t'il s'il remplit 5 paniers ?b) Parmi les fonctions suivantes laquelle détermine l'argent gagné par noé en fonction du nombre de paniers remplis?f : x --> 5x g : x ----> x + 3,20 h : x ----> 3,20 k : x ----> 3,20x c) Calculer l'antécédent de 35,2 par la fonction déterminée au b).A quoi correspond cet antécédent pour Noé ? MERCI A TOUS CEUX QUI VONT MAIDER MERCI <3
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lovelife999
June 2021 | 0 Respostas
Besoin d'aide pour demain encore :) silvouplait Résoudre l'équation suivante : (3x + 7)(-x + 1) = 0 Merci beaucoup beaucoup :) <3
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lovelife999
June 2021 | 0 Respostas
SOS devoir maison Bonjour , je ne comprend pas cet exercice quelqu'un peux m'aider ? :)En 2013, 85 adhérents d'un club nautique faisaient de l'optimiste. L'activité a beaucoup de succès et en 2014 le nombre d'adhérents faisait de l'optimiste a augmenté de 12%. La présidente du club est certaine q'une telle augmentation aura encore lieu pour l'année 2015. Combien, ce club nautique , aura t'il de personnes faisant de l'optimiste en 2015, selon la présidente ? Silvouplait aidez moi je suis complètement perdu :( merci aux gens qui vont m'aider
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lovelife999
June 2021 | 0 Respostas
On considère un cube d'arête 7 m. 1a) Calculer l'aire totale de ce cube.b) Calculer le volume de ce cube.2) On réalise un agrandissement de rapport 2,5 de ce cube. On obtient ainsi un grand cube.a) Calculer l'aire totale du grand cube b) Calculer le volume du grand cube Merci si je demande ici c'est que je ne sais vraiment pas , je suis perdu j'ai déjà chercher dans mes cahiers mais rien y fait je suis vraiment en difficultee pour cet exercice
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lovelife999
June 2021 | 0 Respostas
Factoriser les expressions suivantes en utilisant un facteur commun : a) A = 3(2+3x) - (5+2x)(2+3x) b) B = (4x-1)(x+6) + (4x-1)(-5x+3) c) C = (1-6x)² - (1-6x)(2+5x) 2)) Factoriser les expressions suivantes en utilisant une identité remarquable. a) D = x² + 6x +9 b) E = 4x² - 20x + 25 c) F = 9x² - 25 J'ai vriaiment besoin d'aide pour ces exercices je bloque completement aidez moi svp :(
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lovelife999
January 2021 | 0 Respostas
Bonjour, j'ai besoin d'aide Effectuer : A = ( 1 - √6 ) ( 1+√6 ) B = 7√3 - 2√12+ 3√27 voilà merci d'avance parce que c'est à rendre demain et je suis bloquée !!
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lovelife999
January 2021 | 0 Respostas
Bonjour tout le monde pouvez vous m'aider ^^ je suis en seconde et je n'y arrive pas pour certains calculs, merci d'avance Résoudre chacune des inéquations suivantes et donner la solution sous forme d'un intervalle. a) -4(x-4) ≤ 7-2x b) 5x-1 > -4(x+1) c) -7(x-6) ≤ -8x+4 deuxieme exercice : c= (1-√6)(1+√6) d= 7√ 3 - 2√12 + 3√ 27
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Lovelife999
May 2019 | 0 Respostas
Bonjour à tous , quelqu'un pourrait m'aider à comprendre ce texte ? merci d'avance “Hullo, Robinson Crusoe” Four children, John, Susan, Titty and Roger, are holidaying with their mother on the shores of an unnamed lake in England. They have received permission to set sail in the dinghy Swallow to camp on a deserted island on the lake and have been there for some time. Hullo Man Friday”, said Titty joyfully. “Hullo, Robinson Crusoe,” said Mother. That was the best of Mother. She was different from other natives. You could always count on her to know things like that. Robinson Crusoe and Man Friday then kissed each other as if they were pretending to be Titty and Mother. “You didn’t expect to see me so soon after yesterday,” said Mother, “but I came to say something to John. I supposed he’s with the rest of the crew in that secret harbor of yours that poor natives are not allowed to see.” “No. He isn’t on the island just at present,” said Titty. “No one is except me… and now you too.” “So you really are Robinson Crusoe,” said Mother, “and I am Man Friday in earnest. If I’d known that I’d have made a good big footprint on the beach. But where are the others?” “They’re all right,” said Titty. “They’re coming back again. They’ve gone in Swallow on a cutting-out expedition.” More than that she could not well say, because, after all, Man Friday might be Mother, but she was also a native, even if she was the best native in the world. “I expect they’ve gone to meet the Blackett children,” said Mother. “Man Friday ought not to know anything about them,” said Titty. “Very well, I won’t,” said Mother. “But what are you doing all by yourself?” “Properly I’m in charge of the camp,” said Titty. “But while they’re not here it does not make any diff erence if I’m Robinson Crusoe instead.” “I am sure it doesn’t,” said Mother. “Have they left you anything to eat?” “I’ve got my rations in the tent,” said Titty. “Well, it’s high time you ate them,” said Mother. “Will you let Man Friday put some more wood on the fire and make some tea? I can’t stay very long but perhaps they’ll be back before I go.” “I don’t think they will,” said Titty. “They’ve sailed across the Pacifi c Ocean. Timbuctoo is nothing to where they’ve gone.” “Well, I’ll make some tea anyhow,” said Mother. “Let’s see what they’ve left you in the way of rations.” […] When they had eaten their meal, which was a very good one, Robinson Crusoe said, “Now Man Friday, would you mind telling me some of your life before you came to this island?” Man Friday began at once by telling how she had nearly been eaten by savages, and had only escaped by jumping out of the stew-pot at the last minute. “Weren’t you scalded?” said Robinson Crusoe. “Badly,” said Man Friday, “but I buttered the places that hurt most.” And then Man Friday forgot about being Man Friday and became Mother again, and told about her own childhood on a sheep station in Australia, and about emus that laid eggs as big as baby’s heads, and opossums than ran about with their young ones in a pocket in their fronts, and about kangaroos that could kill a man with a kick, and about snakes that hid in the dust. Here Robinson Crusoe, who had forgotten that she was Robinson Crusoe, and had turned into Titty again, talked about the snake which she had seen herself in the cigar-box that was kept in the charcoal-burners’ wigwam . Then she told Mother about the dipper, and how it had bobbed at her, and fl own under water. Then Mother talked about the great drought on the sheep stations, when there was no rain and no water in the wells and the flocks had to be driven miles and miles to get a drink, and thousands and thousands of them died. Then she talked of the pony she had when she was a little girl, and then of the little brown bears that her father caught in the bush, and that used to lick her fingers for her when she dipped them in honey. Time went on very fast, much faster than when Robinson had been alone.
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