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ПОМОГИТЕ ДАЮ 50 БАЛЛОВ!!! Определи коэффициент a и реши графически систему уравнений {ax+3y=115x+2y=12, если известно, что первое уравнение этой системы обращается в верное равенство при x= 16 и y= −7. Ответ: коэффициент a= ; решением системы является пара чисел ( ; ) (координаты точки пересечения прямых при построении могут быть записаны приблизительно, если точка пересечения — внутри клеточки; при необходимости ответ округлить до десятых). Смотреть ответ Zombynella Zombynella Ответ: 1)а=2. 2)Координаты точки пересечения графиков функций (1,3; 2,8).    Решение системы уравнений (1,3; 2,8). Объяснение: Определи коэффициент a и реши графически систему уравнений {ax+3y=11 5x+2y=12, если известно, что первое уравнение этой системы обращается в верное равенство при x= 16 и y= −7. 1)Найти коэффициент а. Подставить в первое уравнение данные значения х и у: а*16+3*(-7)=11 16а-21=11 16а=11+21 16а=32 а=2; 2)Решить графически систему уравнений: 2х+3у=11 5х+2у=12 Построить графики. Графики линейной функции, прямые линии. Придаём значения х, подставляем в уравнение, вычисляем у, записываем в таблицу. Для построения прямой достаточно двух точек, для точности построения определим три.   Прежде преобразуем уравнения в более удобный для вычислений вид:                    2х+3у=11                                          5х+2у=12                  3у=11-2х                                           2у=12-5х                  у=(11-2х)/3                                        у=(12-5х)/2                                           Таблицы:               х    -5     -2      1                              х    -2     0      2               у     7      5      3                              у     11     6      1 Координаты точки пересечения графиков функций (1,3; 2,8). Решение системы уравнений (1,3; 2,8). Новые вопросы в Алгебра СРОЧНО!!! Приведите выражение к многочлену стандартного вида, используя формулы сокращённого умножения:(1/2m+4n)^2 5. Подайте тричлен у чигляді У зигляді квадрата двочлена: квадрата двочлена: а² + 8 +16.​ ДУЖЕ ТЕРМІНОВО! Розв'язати систему рiвнянь ​ СРОЧНО!!! Докажите, что при любом целом значении х значение выражения делится на 10. (3x-1)(3x+1)+(x-4)^2-2x+5 ПОМОГИТЕ ПОЖАЛУЙСТА С АЛГЕБРОЙ, СРОЧНО 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 системы уравнений графически, мы можем начать с определения коэффициента a в первом уравнении, используя данные о x и y, при которых это уравнение является верным.

1. Определение коэффициента a: Подставим значения x=16 и y=-7 в первое уравнение и решим его: a16 + 3(-7) = 11 16a - 21 = 11 16a = 11 + 21 16a = 32 a = 32/16 a = 2

Таким образом, коэффициент a равен 2.

2. Решение системы графически: Теперь мы можем решить систему уравнений графически. Исходные уравнения: 2x + 3y = 11 5x + 2y = 12

Преобразуем уравнения в более удобный вид: 3y = 11 - 2x 2y = 12 - 5x y = (11 - 2x)/3 y = (12 - 5x)/2

Построим графики этих функций и найдем точку их пересечения:

yamlCopy code
          график 1: y = (11 - 2x)/3
          график 2: y = (12 - 5x)/2

После построения графиков найдем точку пересечения прямых, которая будет решением системы уравнений. Ответ округлим до десятых:

Координаты точки пересечения графиков функций: (1.3, 2.8)

Таким образом, решение системы уравнений: (x = 1.3, y = 2.8)