ПОМОГИТЕ !!!!! СРОЧНО ОЧЕНЬ НУЖНО РЕШЕНИЕ !!!!!! Даю 10 балов. Created by 0207kitti. geometriya-ru

Ответ: a=11; b=7Объяснение: Cредняя линия трапеции равна половине суммы оснований. Составим систему уравнений:{a+b=18{a-b=4Решаем методом подстановки: a=4+bподставляем в верхнее уравнение и получим:4+b+b=182b=18-4b=7a=4+7=11 Реклама Реклама Новые вопросы в Геометрия умоляю срочно задание 1 А СРОЧНО ДАМ 20 БАЛЛОВ ГЕОМЕТРИЯ четырехугольник АВСD - трапеция найдите угол между векторами пожалуйста, помогите отрезон КН не пересекает прямую а. из его концов и середины Д проведены перпендикуляры КК1, НН1 и ДД1, еслик КК1= 14, НН1= 10 решите срочно плиз пожалуйста, помогите Даны точки А(2; 4), B(-6; 0) и C(8; 4). Определите координаты точки D выполнялось равенство пожалуйста, помогите помогите плииизпжпжпжжпжпжпжпжпж срооочно прошу хотя-бы один 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. 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