Предмет: Геометрия, автор: vitalikvasuluk11

знайдіть скалярний добуток векторів а(3;-2) і б(4;5)

Ответы

Автор ответа: yatsunbohdan

1

Відповідь:

2

Пояснення:

1) a*b=x₁x₂+y₁y₂

2)a*b=(3*4) + (-2*5) = 12 + (-10) = 2

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: dashazagorskaya1203

помогите срочно!!!
Прочитать текст и раскрыть скобки употребляя Pr. Simple

Jon's daily routine is a little boring but he_________ (like) it. He usually_____(get) up at about 6:00 or 6:30 in the morning, after his alarm clock______(wake) him up. First, he_____(brush) his teeth and______(shave) and_____(wash) his face. Then, he_____(get) dressed and_____(go) downstairs to have breakfast with his family. He always ________(have) coffee, cereal, and lots of fruit. He______(take) a bus to work because he doesn't like to drive, and he always_______(arrive) at his office before 8:00. Five o'clock is his favorite time of the day because he______(finish) work and ____(hurry) back home and______(see) his wife and children again. He has two boys, Thomas, who is six years old and Patrick, who is eight. They________(eat) dinner together in their dining room at around 6:00, and after that he____(spend) time with his wife and kids at home. They really _______(enjoy) watching their favoгrite TV programs together. In addition, two or three times a week he_____ (do) sport in the evening, so he can stay strong and healthy. He____ (think) that this is very important! Finally, at about 9:30, he____(go) to bed, _____(read) often and then_____(fall) asleep.
Sure, some people think his daily routine is a little boring - but on weekends and holidays he_____(love) to fly airplanes for fun! It's his favorite hobby.

1 год назад

Предмет: Немецкий язык, автор: p0902n

помогите пожалуйста

1 год назад

Предмет: Физика, автор: KraysTv

Определите емкостное сопротивление (кОм) цепи, состоящей из двух последовательно соединенных конденсаторов емкостями 80 нФ и 120 нФ переменному току частотой 550 Гц.

1 год назад

Предмет: Астрономия, автор: raufismonov

Какими мы станем- перспективы развития человечества

6 лет назад

Предмет: Алгебра, автор: Аноним

побудуваты график функцыи
у=х-5

6 лет назад