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Вопрос по геометрии:
діагоналі паралелограма дорівнюють 15 і 20 см а кут між ними 30 градусів. обчислити площу-
Автор:
dawson78
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Площадь параллелограмма = 1/2×d1×d2×sin ∠между ними.
S = 1/2×15×20×1/2 = 15×10×1/2 = 150/2 = 75 (см²)
Ответ: S= 75 см²
Еще 4 ненужных тебе вопроса, но это важно для поиска
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Вопрос по математике:
В прямоугольном паралипипеде АвС DA1B1C1D1,известно что CA1=23, CD=3AD=14,найдите длину ребра BB1-
Ответов: 1
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6 лет назад
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Вопрос по русскому языку:
Укажите номер предложения, в котором допущена пунктуационная
ошибка.
1) Весна – это время пробуждения природы от долгой зимней спячки.
2) Теплые лучи солнца съедают последние россыпи снега и под деревьями зазвенели веселые ручейки.
3) Паша поднял голову и сказал « Смотрите, птицы вернулись из теплых стран».
4) На городских клумбах распускаются первые цветы: тюльпаны и крокусы.
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Ответов: 1
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6 лет назад
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Вопрос по українській мові:
У котрому рядку записані правильні форми вищого та найвищого ступенів порівняння прикметників?
а) самий добрий, найсмачніший, менш відважний;
б) найкращий, більш розумний, вишчий;
в) мудріший, менш корисний, глухіший;
г) щонайгарніший, більш спокійний, найдобріший;
ґ) більш спокійніший, синіший, веселіший.
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Ответов: 4
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6 лет назад
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Вопрос по английскому языку:
1. The branch of Phonetics that studies the way in which the air vibrates between the speaker’s mouth and the listener’s ear is:
a) acoustic phonetics;
b) auditory phonetics;
c) articulatory phonetics.
2. Individual sounds of speech refer to:
a) segmental phonetics;
b) suprasegmental phonetics.
3. Speaker’s individuality, temporal provenance, social provenance, sex, age belong to:
a) phonetic style-forming factors;
b) incidental, concomitant features of the extralinguistic situation.
4. The phenomenon of hesitation is observed mostly in:
a) prepared speech;
b) spontanious speech.
5. The term “phoneme” is used to mean “sound”:
a) in its contrastive sense;
b) to describe sounds which are variants of a phoneme.
6. The principal allophones of the phoneme:
a) do not undergo any distinguishable changes in the chain of speech; b) occur under the influence of the neighbouring sounds in different phonemic situations.
7. The invariant of the phoneme considers such articulatory features that:
a) can be changed without affecting the meaning;
b) can not be changed without affecting the meaning.
8. The pronunciation error is called phonetic if:
a) an allophone of the same phoneme is replaced by an allophone of a different phoneme;
b) an allophone of the phoneme is replaced by another allophone of the same phoneme.
9. The narrow or allophonic transcription suggests:
a) special symbols for all the phonemes of a language;
b) special symbols including some information about articulatory activity of particular allophonic features.
10. The “mentalistic” or “psychological” phoneme theory was originated by:
a) D. Jones and L. Bloomfield;
b) N. Trubetskoy, R. Jacobson and M. Halle;
c) I. A. Baudain de Courtenay.
11. In modern Russian linguistic the following conception of phoneme is adopted:
a) “functional”;
b) “mentalistic” or “psychological”;
c) “abstract”
d) “physical”
e) “materialistic”.
12. The phonemes are to be said in contrastive distribution if:
a) they occur in different positions and never occur in the same phonetic context;
b) they occur in the same phonetic context.
13. Russian linguists widely use the following method of phonological analysis:
a) semantic;
b) distributional.
14. The term “accomodation” is used by linguists to denote the interchange of :
a) “vowel + consonant” type;
b) “consonant + consonant” type.
15. Loss of plosion is a result of:
a) the manner of articulation assimilation;
b) the lip position accomodation;
c) the position of the soft palate accomodation.
16. The problem of vowels in unstressed position is important for:
a) the Russian language;
b) the English language;
c) the both.
17. Grammatical forms of words and lexical units are distinguished by:
a) historical sound alternations;
b) stylistic sound modifications.
18. Careful articulation and relatively low speed are the features of:
a) informal speech;
b) formal speech.
19. The theory of muscular tension was introduced by:
a) O. Jespersen;
b) V. A. Vassilyev;
c) L. V. Shcherba;
d) R. H. Stetson.
20. The majority of linguists treat the syllable as:
a) a purely articulatory unit;
b) the smallest pronounceable unit which can reveal some linguistic function.
21. The structure of the syllable in English is mostly:
a) open;
b) closed.
22. English word stress is a phenomenon, marked by the variations of:
a) force and pitch;
b) quantity and quality;
c) all these factors.
23. In English word stress is:
a) free;
b) fixed.
24. Two equal stresses are typical for:
a) English;
b) Russian.
25. The terms of which level are more suitable for the aims of teaching:
a) of the acoustic level;
b) of the auditory level.
26. The nucleus of an intonation pattern is formed by:
a) all the stressed syllables of this pattern;
b) the last strongly accented syllable of this pattern;
c) the last two accented syllable of this pattern.
27. The falling tone is common for:
a) orders and commands;
b) general questions;
c) requests.
28. All the sections of the intonation pattern differentiate only:
a) grammatical meaning;
b) lexical meaning;
c) emotional meaning.
29. The initial unstressed syllables preceding the prosodic nucleus are called:
a) proclitics;
b) enclitics.
30. Pauses of perception are:
a) a silent stop on the phonation;
b) a sharp change of pitch direction
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Ответов: 1
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6 лет назад
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