срочно помогите с алгеброй уравнение!! срочно. Created by vikakr6282. algebra-ru

Ответ:x=31; y=21Объяснение:{x-2y=-117x-10y=7x=-11+2y7(-11+2y)-10y=7-77+14y-10y=7-77+4y=74y=84y=21x=-11+2*21=31 Реклама Реклама Shul3r Shul3r Ответ:(31;21)Объяснение:x-2y=-11 x=(-11+2y) 7x-10y=7потом подставляем это выражение заместо x7(-11+2y)-10y=7 -77+14y-10y=714y-10y=7+774y=84y=84:4y=21Теперь найдем xx=-11+2*21x=-11+42x=31 Реклама Реклама Новые вопросы в Алгебра упростите выражение 1.9. Определите геометрический смысл уравнений:1) х2+3x-y+7=0;2) у? +3y=x+7=0;3) x2+y2-8х+7=0;4) xy=2. помогите 99 балов СРОЧНО 1 упростите: 5(2a+1)-3 2 Вынесите общий множитель за скобки 18a3 + 6а2 3 Упростите выражение (3*)3 . 3* 33.310 4. Упростите … выражение (x - 6)2 - 2x(-3x - 6) 5. Решите уравнение 5x + 2(3 - 4x) = 2x + 21 6. Представьте многочлен в виде произведения а2 - ab - 4a + 4b 7. Боковая сторона равнобедренного треугольника на 8 см меньше основания. Найдите стороны треугольника, если известен периметр треугольника - 44 см. Контрольная! срочно помогите Дам 32 балла Решите задачу с помощью дробно-рационального уравнения: Пароход прошёл 60 км по течению реки и затем обратно, затратив на весь путь 8 часов. Требуетс … я определить собственную скорость парохода, если скорость реки течения реки 4 км/ ч. 1.4. Решите уравнение 7|х|-2|х|+6=3|х|+12 решить неравенство0,2x+1>0 Помогите пожалуйста, 10 баллов Помогите мне без игнора 1) Умножить разность 1 — 3x_2у на сумму 3xy+ 1. 2) Представить в виде многочлена произведение (2т + п)(2т – п). 3) Записать в виде многочлена (-0,5ab … + 1,2c3) (-0,5ab – 1,2c3). 4) Выполнить умножение многочленов (2t – сn)(2t + c n). Предыдущий Следующий Реклама - это не так уж плохо Реклама - это не так уж плохо Понимаем - вы пришли сюда не за рекламой. Но она помогает нам предоставлять бесплатный доступ к Знаниям. Пожалуйста, внесите наш сайт в список разрешенных. ОК, разблокирую рекламу на Знаниях! Вместе мы знаем больше Этот сайт использует cookies Политика Cookies . 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