Question

{3x+2y=1450{2x+900y=4Пожалуста, срочно помогите!!!​ Смотреть ответ olga0olga76 olga0olga76 Ответ:(484 16/337; -1 24/337)Объяснение: {3x+2y=1450 |*2{2x+900y=4. |*3{6x+4y=2900-{6x+2700y=12.____________6х-6х+4у-2700у=2900-12-2696у = 2888у = 2888/(-2696) = 361 / (-337)у = -1 24/3373х + 2у = 1450 →3х + 2*(-361/337) = 14503х - 722/337 = 14503х = 1450 + 722/337х = 1450/3 + (722/337)/3 == 483 + 1/3 + 722/(337*3) == 483 + (1*337 + 722)/(337*3) == 483 + 1059/(337*3) = 483 + 353/337 == 484 16/337 Новые вопросы в Математика (-3)³= Я в цьому не розумію:___ допоможіть нелп Вы можете решить эту задачу? 1+2+3+1 1+2+3+1 1+2+3+1=? СРОЧНО ПЛИЗ :7 24 28 не подходит 6) Чему равны углы треугольника АКN, если известно, что угол N на 16° меньше угла К, а угол А- прямой?​ Говяжьи сосиски готовят из говядины и свиного жира, при этом на 4 части говядины берется одна часть свиного жира. Сколько говядины содержится в 75 кг … говяжьих сосисок? ​ в) Скорый поезд, двигаясь со скоростью 84 км/ч, и товарный поезд, двигаясь со скоростью 58 км/ч, проехали вместе 1200 км. Сколько времени находился в … пути каждый поезд, если скорый поезд затратил на свой путь в 2 раза меньше времени, чем товарный? ​ 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

Ваш вопрос кажется немного неясным, но я попробую помочь вам разобраться в нем.

1. Ваш вопрос начинается с системы уравнений: `{3x+2y=1450, 2x+900y=4}`. Это система линейных уравнений, которую можно решить методом подстановки или методом исключения. В данном случае, решение будет следующим:

# Подстановка
x = (1450 - 2y) / 3

# Подставляем x в второе уравнение
2*x + 900*y = 4

# Решаем уравнение относительно y
y = (4 - 2*x) / 900

# Подставляем y в первое уравнение
x = (1450 - 2*(4 - 2*x) / 900) / 3

2. Затем вы задаете вопрос о том, что равны углы треугольника, если угол N на 16° меньше угла К, а угол А прямой. Это вопрос о треугольнике, и ответ будет зависеть от значений углов.

3. В третьем вопросе говорится о том, сколько говядины содержится в 75 кг говяжьих сосисок, если на 4 части говядины берется одна часть свиного жира. Это вопрос о пропорциях, и ответ будет `75 / (4/1 + 1) = 187.5 кг говядины`.

4. В четвертом вопросе говорится о скоростях двух поездов и об их пути. Это вопрос о скоростях и расстояниях, и ответ будет зависеть от конкретных значений скоростей и расстояний.

5. В последнем вопросе говорится о том, что (3)³ не равен 27. Это неверно, так как (3)³ действительно равен 27. Возможно, вопрос был неправильно понят или содержит ошибку.

Пожалуйста, уточните ваши вопросы, если они отличаются от вышеуказанных.