Question

Помогите ето срочно дам 64 балов!!!!!!!!!!!! {2x+y=0 {3y-x=7  методом графічний Смотреть ответ Пеппер Пеппер Ответ: А (х; у) (-1;  2) Объяснение: {2x+y=0;   у=-2х;                         х=0;  у=0;   х=2;  у=-4 {3y-x=7;   3у=х+7;  у=(х+7)/3;      х=2;  у=3;   х=5;  у=4 Новые вопросы в Алгебра Корнем уравнения х(х-5)=6 ?​ СРОЧНО!!!!!!!За 2 кг помідорів і 3 кг огірків батько заплатив 280 грн. Яка вартість 1 кг огірків та 1 кг помі- дорів, якщо 5 кг помідорів до … рожчі за 4 кг огірків на 125 грн? СРОЧНО!!!!!Розв"яжіть систему рівнянь способом підстановки: {8х+у=3 7х-5у=32. в1=4, q =3, в6=? знайти в6 СРОЧНО!!!!!Розв"яжіть систему рівнянь способом додавання: {5х+у=7 3х-2у=12. 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

Давайте начнем с решения системы уравнений методом графического способа:

Система уравнений: 1. 2x + y = 0 2. 3y - x = 7

Для решения методом графика нужно построить графики обоих уравнений и определить точку их пересечения, которая будет решением системы.

1. Начнем с первого уравнения: 2x + y = 0. Для этого уравнения, если x = 0, то y = 0, а если y = 0, то x = 0. То есть, это уравнение представляет собой прямую, проходящую через начало координат (0,0) и имеющую угол наклона 45 градусов к положительному направлению оси x.

2. Теперь перейдем ко второму уравнению: 3y - x = 7. Перепишем его в виде y = (x + 7)/3. Это тоже уравнение представляет собой прямую, но угол наклона и ее положение будут другими.

Теперь нарисуем графики обоих уравнений на одном координатном графике:

График первого уравнения (2x + y = 0) - это прямая, проходящая через (0,0) и имеющая угол наклона 45 градусов.

График второго уравнения (3y - x = 7) - это прямая с углом наклона менее 45 градусов, так как коэффициент при x равен 1/3, что меньше 1. Она также пересекает ось y в точке (0, 7/3), что будет нашей точкой пересечения.

Теперь найдем точку пересечения этих двух прямых, которая будет решением системы. В данном случае, эта точка равна (2, 3).

Итак, решение системы уравнений методом графика: (x; y) = (2; 3).

Что касается других вопросов:

1. Корень уравнения x(x-5) = 6: x(x-5) = 6 x^2 - 5x - 6 = 0 (x-6)(x+1) = 0 x = 6 или x = -1

2. Вопрос о стоимости 1 кг помидоров и 1 кг огурцов не имеет достаточно информации для решения. Нужно знать, сколько стоит каждый вид продукции отдельно.

3. Решение системы уравнений 8x + y = 3 и 7x - 5y = 32 методом подстановки: Из первого уравнения можно выразить y: y = 3 - 8x

Подставляем это выражение во второе уравнение: 7x - 5(3 - 8x) = 32 7x - 15 + 40x = 32 47x - 15 = 32

47x = 47 x = 1

Теперь подставим значение x в первое уравнение: 8x + y = 3 8(1) + y = 3 8 + y = 3 y = 3 - 8 y = -5

Решение: x = 1, y = -5.

4. Для нахождения в6 в уравнении в1 = 4, q = 3 и в6, нужно знать, какие формулы или соотношения связаны с этими величинами. Дополнительной информации для ответа на этот вопрос не хватает.

5. Решение системы уравнений 5x + y = 7 и 3x - 2y = 12 методом додавання (методом сложения): Умножим первое уравнение на 2 и второе уравнение на 1, чтобы сделать коэффициенты при y одинаковыми: 10x + 2y = 14 3x - 2y = 12

Теперь сложим оба уравнения: (10x + 2y) + (3x - 2y) = 14 + 12 13x = 26

Теперь найдем x: x = 26 / 13 x = 2

Теперь подставим значение x в одно из уравнений, например, в первое: 5x + y = 7 5(2) + y = 7 10 + y = 7 y = 7 - 10 y = -3

Решение: x = 2, y = -3.