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{-x(1-12y)+4y(-3x+2)=26 {y(x+6)=x(y-3)-3 решите пожалуйста!!! Смотреть ответ nataliyarudnicp6wzjc nataliyarudnicp6wzjc {-x+12xy-12xy+8y=26 {yx+6y=yx-3x-3 {-x+8y=26 {6y=-3x-3 {x=8y-26 {x=-1-2y 8y-26=-1-2y 10y=25 y=2,5 Подставим y в любое уравнение: x=8y-26 x=8*2,5-26 x=-6 (-6;2,5) Новые вопросы в Математика Помогите пожалуйста очень легко 3(x-4)-5(3-x)=-4(x+3)​ Яка з пар чисел є розв'язком системи нерівностей 2x + 3y = 7; 4x - 5y = 3 СРОЧНО Катет і гіпотенуза прямокутного трикутника відповідно до- рівнюють 8 см і 10 см. Знайдіть тангенс кута, протилежного меншому катету. Спорости вираз 1) 0,7a•5 2) 0,8x•9,2y 3) 7,1m•8,3m 4) 0,9a•8,3b•5c 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

Для решения уравнения {-x(1-12y)+4y(-3x+2)=26} и {y(x+6)=x(y-3)-3}, нужно сначала решить каждое уравнение отдельно и затем найти значения x и y, которые удовлетворяют обоим уравнениям одновременно.

1. Решим первое уравнение {-x(1-12y)+4y(-3x+2)=26}: Распишем скобки и сократим подобные слагаемые: -x + 12xy + 12xy + 8y = 26 Теперь сгруппируем переменные x и y: 12xy - x + 12xy + 8y = 26 Соберем все слагаемые с x вместе и слагаемые с y вместе: 24xy - x + 8y = 26 Теперь выразим x: x = 24xy + 8y - 26

2. Решим второе уравнение {y(x+6)=x(y-3)-3}: Распишем скобки: yx + 6y = xy - 3x - 3 Перенесем все слагаемые с x на одну сторону, а все слагаемые с y на другую: yx - xy + 6y = -3x - 3 Теперь выразим x: x(y - 1) = -3y - 3 x = (-3y - 3) / (y - 1)

Таким образом, мы получили выражения для x и y: x = 24xy + 8y - 26 x = (-3y - 3) / (y - 1)

Теперь можем найти значение y, подставив первое уравнение во второе: 24(24xy + 8y - 26)y + 8y - 26 = -3y - 3

После нахождения значения y, подставим его в любое из уравнений для x и найдем значение x.

Что касается остальных вопросов, давайте рассмотрим их по порядку:

3. Уравнение: 3(x-4) - 5(3-x) = -4(x+3) Раскроем скобки и решим уравнение: 3x - 12 - 15 + 5x = -4x - 12 8x - 27 = -4x - 12 12x = 15 x = 15 / 12 x = 1.25

4. Система уравнений: 2x + 3y = 7 4x - 5y = 3

Для решения системы можно воспользоваться методом подстановки или методом сложения/вычитания уравнений. Подставляя одно уравнение в другое, найдем значение y, а затем подставим его в любое из уравнений и найдем значение x.

5. Тангенс кута, протилежного меньшему катету прямоугольного треугольника, равен отношению длины другого катета к длине гипотенузы: Тангенс угла = (длина меньшего катета) / (длина большего катета)

В данном случае, тангенс угла, противоположного меньшему катету, равен: Тангенс угла = 8 см / 10 см = 0.8

6. Скоростной выражения:

1. 0.7a * 5 = 3.5a
2. 0.8x * 9.2y = 7.36xy
3. 7.1m * 8.3m = 59.03m^2
4. 0.9a * 8.3b * 5c = 37.35abc

Если у вас возникнут дополнительные вопросы, не стесняйтесь спрашивать!