Question

{2 x - 2 = 1 - x,{31 + 5x > -(4 + 2x)Кто сделает с решением даю 50 балдов​ Смотреть ответ alex22025 alex22025 Ответ: x =1 36 > -6 Пошаговое объяснение: {2x -2 = 1 - x {31 + 5x > -(4+2x) {3x = 3 {31 + (5*1) > -(4+2*1) {x = 1 {36 > -6 Новые вопросы в Математика Помогите пожалуйста терміново!!!!! Висота і бічна сторона прямокутної трапеції відповідно дорівнюють 12 см і 15 см. Обчислити периметр трапеції, якщо її діагональ ділить … тупий кут пополам.​ Помогите пожалуйста с решением ДОПОМОЖІТЬ (даю 30 б.) дано точки: a (-4;3), b(3;-4), c(-2;-6); d(-6,-2) укажи точку: 1) обсиса якої дорівнює -2; 2) ордината якої дорівнює -4. СРОЧН … О допоможіть срочно треба порішать приклади.​ 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

Конечно, я готов помочь вам с решением задачи. Для начала, давайте рассмотрим задачу о периметре трапеции:

У нас есть прямоугольная трапеция с высотой 12 см и боковой стороной 15 см. Диагональ делит тупой угол пополам.

Давайте обозначим вершины трапеции: верхнюю левую точку - A, верхнюю правую точку - B, нижнюю левую точку - C и нижнюю правую точку - D.

Известно, что высота и боковая сторона образуют прямой угол, поэтому треугольник ACD прямоугольный. Мы также знаем, что диагональ BD делит тупой угол (угол ADC) пополам.

Мы можем воспользоваться свойством диагоналей прямоугольных треугольников: сумма квадратов катетов равна квадрату гипотенузы.

AC^2 + CD^2 = AD^2 12^2 + 15^2 = AD^2 144 + 225 = AD^2 369 = AD^2 AD = √369 AD = 3√41 (приблизительное значение)

Теперь, так как диагональ BD делит угол ADC пополам, то точка D является средней точкой гипотенузы AC. Это означает, что AD = BD = 3√41.

По определению, периметр трапеции равен сумме длин всех её сторон. В данном случае, трапеция имеет две боковые стороны (15 см каждая), основание (BC) и верхнюю сторону (AB).

Периметр трапеции = AB + BC + CD + DA Периметр трапеции = 3√41 + 15 + 15 + 3√41 Периметр трапеции = 30 + 6√41 (приблизительное значение)

Таким образом, периметр трапеции составляет приблизительно 30 + 6√41 см.

Пожалуйста, обратите внимание, что ваши "дано" точки (a, b, c, d) не имеют прямого отношения к задаче о периметре трапеции. Если у вас есть другие вопросы или задачи, буду рад помочь!