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
vikki17481
vikki17481
16.02.2021 03:14 •  Математика

Роз'яжіть рівняння іxi - 8= -5 i8-0,2xi=12 iixi -2i = 2 i10x -7i -32= -16

👇
Ответ:
fffff131
fffff131
16.02.2021
|x|-8=-5
|x|=-5+8
|x|=3
раскрывая модуль
x_1=-3;x_2=3

|8-0.2x|=12
раскрывая модуль
8-0.2x=12 или 8-0.2x=-12
-0.2x=12-8 или -0.2x=-12-8
-0.2x=4 или -0.2x=-20
x=4:(-0.2) или x=-20:(-0.2)
x_1=-20 или x_2=100
 
||x|-2|=2
раскрывая модуль
|x|-2=2 или |x|-2=-2
|x|=2+2 или |x|=0
|x|=4 или x_1=0
x_2=-4 или x_3=4 или x_1=0

|10x-7|-32=-16
|10x-7|=-16+32
|10x-7|=16
раскрывая модуль
10x-7=16 или 10x-7=-16
10x=16+7 или 10x=-16+7
x_1=2.5 или x_2=-0.9
4,8(2 оценок)
Открыть все ответы
Ответ:
Chillin
Chillin
16.02.2021
1. Lena didn't want to get up,did she? Yes, Lena didn't want to get up.
2. Lena had a lot to do, didn't she ? Yes she did. Lena had a lot to do.
3. It was windy and cold outside, wasn't it? Yes it was. It was windy and cold outside.
4. Lena couldn't think about the party and the cake, could she? Yes she couldn't think about the party and the cake.
5. Lena and her mother decided to have lemon tea and sandwiches for breakfast, didn't they ? Yes they did. They decided to have lemon tea and sandwiches for breakfast.
6 Lena was happy to stay in bed, wasn't she? Yes, she was. She was happy to stay in bed.
4,6(12 оценок)
Ответ:
лиз20031
лиз20031
16.02.2021

1. She found £10 beneath the sofa.
 2. James filled to the police to report the incident.
 3. He dived into the swimming pool twice.
4. He told me the truth.
 5. I watched the last episode of my favourite TV series yesterday.
 6. She sended him a present by post.
 7. Mary crying a lot when she heard the bad news.
 8. Brian went the train to London.
 9. She felt happy when she got her jewels back.
 10. Peter dropped my mother's antique vase. It broke into thousands of pieces.
11. Laura сalled her mother as soon as she arrived in Paris.
12. He stoped talking when I walked into the room.
 13. She tryed to stop the thief, but he got away.
 14. She took the glass with orange juice.
15. Miss Marple solved many mysteries in St Mary Mead.

        GOOD LUCK

4,8(46 оценок)
Новые ответы от MOGZ: Математика
logo
Вход Регистрация
Что ты хочешь узнать?
Спроси Mozg
Открыть лучший ответ