М
Молодежь
К
Компьютеры-и-электроника
Д
Дом-и-сад
С
Стиль-и-уход-за-собой
П
Праздники-и-традиции
Т
Транспорт
П
Путешествия
С
Семейная-жизнь
Ф
Философия-и-религия
Б
Без категории
М
Мир-работы
Х
Хобби-и-рукоделие
И
Искусство-и-развлечения
В
Взаимоотношения
З
Здоровье
К
Кулинария-и-гостеприимство
Ф
Финансы-и-бизнес
П
Питомцы-и-животные
О
Образование
О
Образование-и-коммуникации
krasnov595egr
krasnov595egr
26.12.2020 22:06 •  Математика

составьте какое-нибуть линейное уравнение с двумя переменными , решением которого млужит пара чисел (-3;2)

👇
Ответ:
wokef1
wokef1
26.12.2020

\displaystyle \left \{ {{x+y=-1} \atop {2x+3y=0}} \right.

Пошаговое объяснение:

x=-3, \ y=2 \Rightarrow x+y=-3+2=-(3-2)=-1;

2x+3y=2 \cdot (-3)+3 \cdot 2=-6+6=0;

Система уравнений:

\displaystyle \left \{ {{x+y=-1} \atop {2x+3y=0}} \right. ;

4,7(14 оценок)
Открыть все ответы
Ответ:
анна2255
анна2255
26.12.2020

Смотрите.

1) Обозначаем t — сколько времени они шли в первый день, тогда (t-1) — сколько во второй.

2) Теперь следующее соотношение — про 6 километров. Пускай в первый день они км, а во второй день — s2, тогда нам дано:

s1-s2=6.

3) Вспоминая, что расстояние=время*скорость (s=v*t), подставляем в эту формулу вместо s1 и s2:

(3,5*t)-(3*(t-1))=6.

Упрощаем:

3,5t-3t+3=6;

0,5t=3;

t=6.

ответ: Таким образом, в первый день они шли 6 часов. Во второй день — 6-1=5 (часов во второй день — 3*5 = 15 (км)

Пошаговое объяснение:

4,7(15 оценок)
Ответ:
ROMMIT2
ROMMIT2
26.12.2020

Пошаговое объяснение:

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

мSorry, I didn't understand anything

мSorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

Sorry, I didn't understand anything

4,4(68 оценок)
Новые ответы от MOGZ: Математика
logo
Вход Регистрация
Что ты хочешь узнать?
Спроси Mozg
Открыть лучший ответ