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NikaI004
NikaI004
14.04.2021 09:38 •  Математика

Координационные точки дельфин (-7; -2), (-3; 4), (-1; 4), (2; 7), (2; 4), (5; 4), (9; -5), (10; -9), (8; -8), (5; -10), (7; -5), (3; -2), (-7; -2).ю ласт (0; 0), (0; ; 1), (3; 0), (0; 0) и глаз (-4; 0), (-4; 1), (-3; 1), (-3; 0), (-4; 0).

👇
Ответ:
oksaniana
oksaniana
14.04.2021
я не помню тему!
Координационные точки дельфин (-7; -2), (-3; 4), (-1; 4), (2; 7), (2; 4), (5; 4), (9; -5), (10; -9),
4,7(26 оценок)
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Ответ:
ROMMIT2
ROMMIT2
14.04.2021

Пошаговое объяснение:

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4,4(68 оценок)
Ответ:
анна2255
анна2255
14.04.2021

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)
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