Предмет: Алгебра, автор: vladislavvlasyuk23

срочно помогите умаляю​

Приложения:

vladislavvlasyuk23: vladislav 45 93
vladislavvlasyuk23: ост
vladislavvlasyuk23: а що це таке
vladislavvlasyuk23: ще раз подивись нік првельний vladislav4593
vladislavvlasyuk23: на аве чорная пантера

Ответы

Автор ответа: alixayot8
2

Ответ:

1) \frac{8}{3 \sqrt{2} }  =  \frac{8 \sqrt{2} }{6}  =  \frac{4 \sqrt{2} }{3}  \\ 2) \frac{4}{ \sqrt{13 - 3} }  =  \frac{4}{ \sqrt{10} }  =  \frac{4 \sqrt{10} }{10}  =  \frac{2 \sqrt{10} }{5}

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3.Замініть модальні дієслова еквівалентами
1. According to her father’s plans Sophia (must) get a sound education.
2. As there were no teachers in Palibino Sophia’s father (must) invite an experienced teacher from Kyiv. 3. To cover the school programme
Sophia’s teacher (must) instruct her in languages, arithmetic, grammar, literature, geography and history. 4. Sophia (can) speak and write French quite well since her childhood. 5. Sophia was a very capable pupil. She (can) write excellent compositions and solve complicated problems in mathematics as well. 6. Her teacher didn’t expect that at the age of twelve Sophia (can) suggest a new solution for the determination of the ratio of the diameter of the circle to its circumference. 7. At the age of sixteen Sophia asked her father for permission to go on with her studies in London. ‘You (must) take private lessons, as
women (may not) attend lectures at the University,’ he said. 8. He told her that women (must) obtain special permission from the University authorities.
9. Sophia did get that permission, but still she (may not) take examinations. 10. ‘I (must) go abroad to complete my education,’ decided Sophia.
4. Доберіть потрібну форму дієслова.

1. She ..... clean the house herself.
a) is to; b) can; c) has to; d) should.
2. We ..... look into the matter.
a) must; b) can; c) may; d) don’ t have to. 3. I ..... exactly express my meaning.
a) shan’t; b) mustn’t; c) can `t; d) needn’t.
4. ..... I bring my sister to the party ?
a) shall; b) can; c) must; d) may.
5. ..... you see anything in this inky darkness ? a) can; b) may; c) must; d) need.
6.She asked me if she ..... use my telephone.
a) can; b) could; c) might; d) may.
7. I ..... go to hospital to visit my aunt.
a) could; b) had to; c) was able to; d) must.
8. She ..... stay at home because she didn’t feel well. a) could; b) was to; c) had to; d) must.
9. What is done ..... be undone.
a) can; b) cannot; c) may not; d) must.
10. ..... we learn the poem today ?
a) shall; b) should; c) could; d) must.
11. She ..... graduate that year.
a) had to; b) must; c) could; d) was to.
12. She ..... get to the airport in time, there isn’t much time left. a) can; b) won `t be able; c) wouldn’t; d) won’t have to.
13. Students ..... do homework in time.
a) must; b) are to; c) have to; d) can.
14. ..... I shut the door ?
a) must; b) can; c) may; d) need