сколько существует чисел, квадраты которых уменьшенные на 4, равны 0

The (1) _____ ‘yuppie’ is basically an invention of the mass media, yuppies do not indeed exist. On the one hand, yuppies are the result of the (2) _____ against the antiestablishment, against the free-minded 1960s’ (3) _____. But on the other hand they are a phenomenon much more complex, tied to the nation’s economy. What is a yuppie? A Young Urban Professional, making a (4) _____in business. Being a yuppie is a (5) _____ of life. Those who want to be yuppies choose the yuppie (6) _____ system. They conform (7) _____ the society standards. They believe that money cures all ills. Yuppies are young: in their late twenties or thirties. Yuppies are urban, and often disapprove (8) _____ suburban lifestyle. Most of all, yuppies are professional: they work hard, rise quickly, and stop (9) _____ nothing. Their behaviour does not (10) _____ social norms, but to most American intellectuals yuppie has negative connotation. 1. A. term B. phrase C. cliché D. idiom 2. A. behaviour B. rebel C. rebellion D. react 3. A. generation B. youth C. adults D. children 4. A. way B. career C. culture D. life 5. A. sense B. behaviour C. way D. simply 6. A. fashionable B. value C. life D. image 7. A. - B. for C. to D. with 8. A. with B. of C. to D. for 9. A. at B. on C. in D. to 10. A. protest against B. support C. differ from D. conform

Сколько  килограммов  в  одной  десятой тоны!?в  одной пятой  центера!"

вычислите центральный угол, соответствующий стороне правильного n-угольника если n равно 5