@neserine

neserine

Beginner

Bonjour :) pourriez-vous m'aider en math, je n'y arrive pas (Système de deux équations a deux inconnue) ? Merci d'avance 1) Résous ce système de 2 équations a 2 inconnues (algébrique et graphique) {5x+3y=30 {5x-9y+30=0 Ce serait sympa de m'expliquer aussi :) 1 Voir la réponse Apolia Apolia On multiplie l'equation 1 part -3On obtiens ce systeme{-15x+-9y=-90{5x-9y+30=0On aditionne membre a membre les deux equation -15x+-9y+5x-9y+30=-90+0[Les y s'annulent]-15x+5x+30=-90-10x+30=-90-10x+30-30=-90-30-10x=-120-10x/-10=-120/-10x=12On remplace x part 12 dans l'equation 15x12+3y=3060+3y=3060+3y-60=30-603y=-303y/3=-30/3y=-3La solution au systeme est (12;3]Si tu as des question n'hesite pas et j'espere ne pas mettre tromper ^^" Merci c'est gentil ! :) Pour ça tu as utiliser la méthode de coefficient ou la méthode par substitution ? substitution je crois ^^ D'accord merci ^^ Mais j'ai un doute la :/
Responda
Pourriez-vous m'aider à corriger mon texte? My typical day. I'm a student,so I have a daly routine that focuses on my study. I get up early in the morning at seven o'clock. After that I have my shower and I eat my breakfast. I leave my home around eight o'clock. Then I go to school, the school start at half past eight. I eat lunch at twelve past five in the school. After I back home at four o'clock. I take some rest. Then I take light snacks with my friands and after I start my study. I usually study till seven o'clock and after I have supper with my family. Before I go to bed I read a book, then I brush my teeth and listen the music and then fall asleep
Responda
Bonsoir, pourriez-vous m'aider ? Dans mes objectifs de fin d'année pour mon examen la prof à demandé de rédiger un texte sur son enfance, sur ce que je faisai et ce que je savais faire étant petite (au past simple) Merci d'avance :)
Responda
Bonsoir tout le monde, pourriez vous me corriger mon texte en anglais svp? The drug is an addictive substance and is a plant or an infusion of chemicals. There are different kinds of drug because a part are legalise like alcohol or cigarette. And the effet are differents. The biggest reason for taking drugs is pressure from friends and from exams. Beredom or family problems can also cause young people to take drugs and loss of a loved one. The consequences of cannabis use are; hallucination, become anxious and paranoïd, can have serious mental problems when they are older and it can make asthma worse and can cause lung cancer. The police will arrest you and you will be suspended and may be excluded of school. The solution are that children in school must be told about the danger of drugs as early as the age of five and introduce drug testing for school pupils. For me if it's a drug as in medicine I'm not against it because it saves life but if it's drug like marijuana or other I'm against it because the completely ruin the people's lives. Merci d'avance
Responda

Helpful Links

Helpful Social

Copyright © 2024 ELIBRARY.TIPS - All rights reserved.