Предмет: Математика, автор: lulu198011pbnoys

Помогите пожалуйста с этими заданием. 1) Решите задачу.
Периметр квадрата 12 см.Чему равна сторона квадрата и начертите этот квадрат .
2) Решите выражения.
100-6-4-(14-7)-60+(35+5)-3
(60+3)+7-50+(13-5)+49

Ответы

Автор ответа: alessandra74
1

Ответ:

100-6-4-(14-7) -60+(35+5) -3(60+3) +7-50+(13-5) +49

100-6-4-7-60+(35+5) -3(60+3) +7-50+8+49

100-6-4-60+40-3•63-50+8+49

100-6-4-60+40-189-50+8+49=-112

Автор ответа: natalka123456789
1

Ответ:

1. Если периметр квадрата(сумма всех его сторон) равен 12 см, то сторона квадрата равна 12:4=3 см(на листике в клетку это 6 клеток, если чертить без линейки)

2. Сначала выполняем действия в скобках:

100-6-4-(14-7)-60+(35+5)-3=100-6-4-7-60+40-3= 60

(60+3)+7-50+(13-5)+49=63+7-50+8+49=77

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Задание.Study general free time activities and their definitions. Translate them.

Surf the internet - On the internet, you can research a topic you are interested in using a search engine, visit your favourite websites, watch music videos, create your own video and upload it for other people to see, maintain contact with your friends using a social networking site, write your thoughts in a blog, learn what is happening in the world by reading news websites, etc.
Play video games - You can play games on your computer or on a game consoles, like PlayStation, X-Box, Wii, PSP, Gameboy, etc. You can play on your own or with your friends or family.
Play a musical instrument - Learn to play the piano, guitar, violin, cello, flute, piano accordion, mouth organ, panpipes, clarinet, saxophone, trumpet, etc. You can play on your own or with a group, such as a band or an orchestra.
Listen to music - Turn up the volume and listen to your favourite type of music, such as pop, rock, hip hop, rhythm & blues, blues, jazz, classical, soul, heavy metal.
Read - Many people love to read both fiction and non-fiction books and magazines. If you like fiction, you can read novels, short stories, crime fiction, romance, etc. If you like non-fiction, you can read biographies, autobiographies, or books on history, science, philosophy, religion, or any other topic you are interested in.
Write - Many people like to write in their diary. Another name for a diary is a journal. You can also write many other things, such as poetry, novels, letters, short stories, etc. (See under Read for more options).