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{5x+3y=4 {2x-y=5 Помогите пожалуйста Смотреть ответ Hasan4ik2282007 Hasan4ik2282007 Ответ: {5x+3y=4 {2x-y=5 вот решение: {5x+3y=4 {y=-5+2x 5x+3(-5+2x)=4 x=19/11     знак / это дробь y=-5+2×19/11 y=-17/11 ответ: (x,y)=(19/11, -17/11) Новые вопросы в Математика 2+2*2=????????????????????? Одна из сумм увеличилась на 15. Насколько следует уменьшить масштаб другого? добавка, уменьшающая сумму на 7.​ А:знайти 13% від 1,5 Б:число 40%якого становить число 9 від 60 В:скільки відсотків становить число 9 від 60ПОМОГИТЕ СРОЧНО!!!!!ПОЖАЙЛУСТА!!!!!ДАЮ 30 Б … АЛОВ!!!!!!!!!​ ПОМОГИТЕЕЕЕЕЕЕЕЕЕЕЕЕЕЕ ПОМОГИТЕЕЕЕЕЕЕЕЕЕЕЕЕЕЕ 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 посмотрим на вопросы по очереди и найдем ответы на них:

1. Решение системы уравнений: У нас дана система уравнений: {5x+3y=4 {2x-y=5 Вы уже предоставили решение: (x,y)=(19/11, -17/11) Это правильный ответ, так как эти значения x и y удовлетворяют обоим уравнениям из системы.

2. 2+22=????????????????????? Здесь нужно выполнить операции по порядку: 2+22 = 2+4 = 6

3. Одна из сумм увеличилась на 15. Насколько следует уменьшить масштаб другого? Уточните, о каких суммах идет речь. Если вы предоставите больше информации, я смогу помочь вам с этим вопросом.

4. Даны следующие задачи с процентами: а) Найти 13% от 1,5: Чтобы найти 13% от числа, умножаем это число на 0,13: 13% от 1,5 = 1,5 * 0,13 = 0,195

   б) Число, которое составляет 40% от числа 9 от 60: Чтобы найти число, которое составляет определенный процент от другого числа, умножаем второе число на процент, выраженный в десятичной форме: 40% от 60 = 0,4 * 60 = 24

   в) Сколько процентов составляет число 9 от числа 60: Чтобы найти процент, который составляет одно число от другого числа, делим первое число на второе и умножаем на 100: (9 / 60) * 100 = 15

   Надеюсь, это помогло! Если у вас возникнут еще вопросы, не стесняйтесь задавать.