Предмет: Математика, автор: Влада511

плошадь доски 36дм в квадрате . Какова длина и ширина доски , если её длина в 4 раза больше ширины?

Ответы

Автор ответа: angelok120120
0
пусть ширина х, тогда длина 4х, получаем уравнение:
х*4х=36
4х^2=36
x^2=9
х=3 -это ширина, а длина значит равна 3*4=12. Периметр будет 2*(3+12)=30
Автор ответа: Аноним
0
пусть ширина х, тогда длина 4х, получаем уравнение: х*4х=36 4х^2=36 x^2=9 х=3 -это ширина, а длина значит равна 3*4=12. Периметр будет 2*(3+12)=30
Автор ответа: Влада511
0
спасибо
Автор ответа: RomikStr
0
ааа что такое ^2?
Автор ответа: angelok120120
0
типо квадрат
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Предмет: Английский язык, автор: martemova326
Task 1. Read the story about magic paintbrush.

The magic paintbrush

Rose loved drawing. She was very poor and didn’t have pens or pencils. She drew pictures on a sand with sticks. One day an old woman saw Rose and said, “Hello! Here is a paintbrush some paper for you!” “Thank you!”, smiled Rose. She was so happy. She looked around and saw a duck on the pond and she decided to draw a duck. Suddenly the duck flew off the paper and Rose understood that she had a magic paintbrush.

Rose was a very kind girl. She drew pictures for everyone in her village. She drew a cow for the farmer, pencils for teacher, toys for all children.

The king heard about the magic paintbrush and sent a soldier to find Rose. When soldier took Rose to the king, king asked Rose to draw a tree with a lot of money on it. But Rose helped only poor people and king was rich. Rose refused to draw a tree with money for king. The king sent her to the prison. But Rose was brave and clever, she drew a key for the door and escaped from prison. The king chased after her. So she drew a big hole, and splat! The king fell in.

Today Rose uses her magical paintbrush to help people, who really need help.


Task 2.
Read the sentences and mark True/ False.

1. Rose was poor girl, so she didn’t have pens to draw. ___________

2. Old woman gave her a magic stick. ___________

3. Rose drew pictures for rich people. ___________

4. King asked Rose to draw a tree full of money. ___________

5. King sent Rose to village. ___________

6. Rose drew a key to get from prison. ___________

7. Rose uses the magic paintbrush to help people, who need real help. ___________