Предмет: Математика, автор: Аноним

как решить (5846-x)+1978=3563
и 2600:x+2962=3002

Ответы

Автор ответа: sergo3
0
5846-x=3563-1978
5846-х=1585
-х=1585-5846
х=4261

2600:x=40
х=2600:40
х=65
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Task 1. You are going to read a biography of Leonardo Da Vinchi. Seven sentences have been removed from the text. Choose from sentences A-H the one which fits each gap (1-7). There is one extra sentence which you don’t need.
Leonardo Da Vinchi (1452-1519)
Leonardo Da Vinci has become known as one of the best examples of a “Renaissance Man.” A Renaissance Man is a term that describes what many artists were doing during the Renaissance: they were exploring science, technology and art all at the same time.
Da Vinci was born in the Florence area of Italy in the 1400s. [1] _____Florence had been in the Dark Ages for many years, but by the time Da Vinci was born, life had settled down enough that people had time to learn about ancient art and science. [2] ____ Before the Renaissance, paintings were very religious. Most were done in an iconic style, meaning the painter wanted people to focus more on the religion behind the painting rather than the artistry. However, Da Vinci had studied Greek and Roman art and wanted to make art in a similar style. Greek and Roman art was very realistic and was inspired by scientific study. Da Vinci took it one step further — when he painted human figures, even in clothes, he would start by drawing the skeleton, then the body over that, then finishing the painting. His paintings and drawings of people were very realistic. [3] ______
Accurate perspective was another part of painting that Medival art often ignored. Da Vinci discovered a way of painting that showed depth. If something is far away, it looks very small.
Medieval art was not very good at showing objects that were far away. [4] ______ Da Vinci used the curiosity and attention to detail he showed in his art in other areas as well. He was also a great scientist, mathematician, engineer and many other things. He drew many plans for machines that we now use, like helicopters and tanks.
[5] ______ Both require a great imagination and a curiosity about what is real and what could be possible.
Da Vinci was well-known for his careful observations and research of the natural world. [6] _____ Find a leaf outside and look at it very carefully. Try to find all the veins and stems in it, and pay attention to its shape. [7] ______

A. Through careful observation, Da Vinci was able to paint backgrounds in a way that looked realistic.
B. After you have looked at it, try to draw it in as much detail as you can.
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D. Science and art were very closely linked during the Renaissance and were especially close in Da Vinci’s mind.
E. One reason is that his interests were so varied that he wasn’t a prolific painter.
F. People were inspired to try these things on their own and a whole new age of learning began.
G. Many of his paintings and drawings were based on his findings.
H. His famous drawing, The Vetruvian Man is one of the first examples of someone trying to map out the proportions of the human body.

Task 2. Read the text again and match the words in bold with the synonyms below.
1. Very much alike _____________________
2. View, outlook _______________________
3. Scrutiny ____________________________
4. Investigating ________________________
5. Neglect ____________________________
6. Adapt _____________________________
7. Concentrate ________________________
8. Very old ___________________________
9. Interest ____________________________
10. Encourage __________________________
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