Предмет: Геометрия, автор: misha2143

4. При якому значенні у вектори (-2; у; 7) і Б(4; 2; 0)
перпендикулярні?

Ответы

Автор ответа: MatemaT123

2

Ответ:

$4$

Объяснение:

Если векторы перпендикулярны, то их скалярное произведение равно нулю.

$-2 \cdot 4+y \cdot 2+7 \cdot 0=0;$

$-8+2y=0;$

$2y=8;$

$y=8:2;$

$y=4;$

misha2143: Спасибо!

misha2143: Отвіть на другие тож

misha2143: Пжжж

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