Предмет: Математика, автор: Vovka1004

Вычисли площадь прямоугольника, периметр которого равен 32см, а длина одной стороны составляет третью часть от длины другой стороны.

Ответы

Автор ответа: mmalinkat

х - одна сторона
3х другая сторона
(х + 3х) * 2 = 32
8х = 32
х = 32\8 = 4 см - одна сторона
4 * 3 = 12 см - другая сторона
12 * 4 = 48 см² площадь прямоугольника

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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”:
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b) to describe sounds which are variants of a phoneme.

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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.

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a) semantic;
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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;
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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:
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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:
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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:
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28. All the sections of the intonation pattern differentiate only:
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c) emotional meaning.

29. The initial unstressed syllables preceding the prosodic nucleus are called:
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30. Pauses of perception are:
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