Question

Найдите количество целых чисел, являющихся решениями системы {3-2a < 13{5a < 15эти скобки считаются за 1 большуюДАЮ 15 БАЛЛОВ​ Смотреть ответ Вика122003 Вика122003 Ответ: 7 Пошаговое объяснение: a∈(-5;3) целые решения: -4, -3, -2, -1, 0, 1, 2, крайние точки (-5 и 3) выколоты. итого 7 целых решений. Новые вопросы в Математика Пример 5^2/5 - 2. Как простыми словами объяснить, доказать человеку, что вначале нужно выполнить все операции в знаменателе и только после этого сокра … щать, а не делать это на ещё не «готовом» примере? Ответ вроде «Есть правило» — не подходит. Дослідіть функцію: f(x)= (2x-3) / (4x-5)Помогите пожалуйста ​ Помогите пожаслуста срочно! Знайдіть похідну функції y=3x2+5√x-7x (х/7+3)^8 наити прозаодни число​ 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

Количество целых чисел, являющихся решениями системы неравенств, заданных вами, равно 7. Правильное объяснение этого результата:

1. Рассмотрим первое неравенство: 3 - 2a < 13. Выразим переменную "a": 2a > 3 - 13 2a > -10 a > -5.

2. Рассмотрим второе неравенство: 5a < 15. Выразим переменную "a": 5a < 15 a < 15 / 5 a < 3.

Итак, решения для "a" находятся в интервале (-5, 3), где крайние точки -5 и 3 исключены.

Теперь давайте переберем целые числа в этом интервале: -4, -3, -2, -1, 0, 1, 2. Всего 7 целых чисел удовлетворяют обоим неравенствам, поэтому ответ действительно равен 7.

Что касается вашего следующего вопроса о порядке выполнения операций, я готов объяснить. В примере 5^2/5 - 2:

1. Сначала выполняем операции внутри знаменателя: 5^2 = 25.
2. Затем выполняем деление: 25 / 5 = 5.
3. И, наконец, вычитаем 2: 5 - 2 = 3.

Порядок выполнения операций в данном случае следует стандартным математическим правилам, именно поэтому мы выполняем операции в знаменателе до сокращения. Это обеспечивает правильный результат.

По вашему последнему вопросу о функции f(x) = (2x - 3) / (4x - 5), вы хотите, чтобы я проанализировал эту функцию или помог с чем-то конкретным? Пожалуйста, уточните.