Question

Решите функцию одновременно методами подстановки, графическим и сложение. Отдам все баллы СРОЧНОООО {2x+2y=8 {2x-y=6 ПРОСТО СРОЧНООО ПОМОГИТЕ, ПОЖАЛУЙСТА!!! Смотреть ответ bena20193 bena20193 Ответ: Объяснение: 1) подстановка {2x+2y=8 {2x-y=6 первое уравнение разделим на 2 {x+y=4 {y=2x-6 подставим в первое уравнение {x+2x-6=4 ;  3x=6+4; 3x=10 ; x=10/3 {y=2x-6     ;  y=2(10/3)-6=(20/3)-6=(20-18)/3=2/3 x=10/3 y=2/3 Проверка 2(10/3)+2(2/3)=(20/3)+(4/3)=24/3=8 {2x(10/3)-(2/3)=(20/3)-(2/3)=18/3=6 2) сложение {2x+2y=8 {2x-y=6 первое уравнение разделим на 2 {x+y=4 {2x-y=6  сложим {3x=4+6 ; 3x=10 ; x=10/3 {x+y=4 ; y=4-x=4-(10/3)=(12-10)/3=2/3 x=10/3 y=2/3 3) графически {2x+2y=8 {2x-y=6 первое уравнение разделим на 2 {x+y=4 ; y=4-x {y=2x-6 построим график y=4-x по точкам х I 0 I 1 ------------ y I 4 I 3 построим график y=2x-6 по точкам х I 0  I  1 ------------ y I -6 I -4 координаты точки  пересечения графиков являются решением системы х=10/3 y=2/3 10/3=1 1/3 ТЫ ПРОСТО СУПЕР!! СПАСИБО ОГРОООМНОЕ!❤❤ Новые вопросы в Алгебра 6. (2 б) Радіус кола, описаного навколо прямокутного трикутника. дорівнюе 10 см. Точка дотику вписаного кола ділить гіпотенузу на вiдрiзки, один із як … их 8 см. Знайдіть катети прямокутного трикутника, якщо радіус вписаного кола 4 см. Побудуйте в одній системі координат графіки функцій у = 3x - 7 i y = 2 та знайдіть координати точки їх перетину. ПОМОГИТЕ СРОЧНОООО 50 БАЛОВ!!! МАТЕМАТИКА НА ИЗИ Вычислить по вариантам площадь фигуры, ограниченной линиями (рисунок обязателен) ((Обчислити за варіантами площу фігури, … обмеженої лініями (рисунок обов'язковий))) На картинке фигуры трачу 100 даю вам 50 срочноРешите пожалуйста немецкая математика 7 классПереведите сами тут неразбириха от переводчикаКвадраты нари … сованы не в масштабе. Условия приводят к размерам в см.а) Назовите длину периметра U и площадь А для каждого из трех четырехугольников.б) Вычислить периметр четырехугольника 1 для x = 4 и y = 6. c) Вычислить площадь четырехугольника 2 и четырехугольника 3 для x = 1,5и у = -2. Укажите (округлив до процента), какой процент площади четырехугольника 3 составляет площадь четырехугольника 2 при данных значениях х и у​ помогите пожалуйста решитьУкажите градусную меру угла, заданного в радианах А 35°B120°C140°D135°E125°​ Предыдущий Следующий Вместе мы знаем больше Этот сайт использует cookies Политика Cookies . Вы можете указать условия хранения и доступ к cookies в своем браузере. 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Answer 1

Я могу помочь вам с решением системы линейных уравнений разными методами. Ваш вопрос очень подробный и содержит уже правильное решение. Вы хотите, чтобы я проверил ваш ответ или объяснил какой-то из методов? Я также могу показать вам график системы, если вы хотите.

Некоторые возможные продолжения диалога: