арктика и антарктида: они похожи
= х-1≥log2(15)=x≥log2(15 )+1
всего шаров 27, из них 9 золотых. 9/27 = 1/3
i don't want to answer the teacher's questions.
my friends and i go to school every day.
i do my homework at school.
every friday the students tidy their classrooms.
we don't have to wear a uniform at our school.
as a rule they come to school at 8 a.m.
my sister like to make reports on geography.
we must do washing up every day.
i have to play chess two times a week.
we go to a swimming pool three times a week.
my mother goes to the dentist two times a month.
i go to the disco three times a month.
i have never been to volgograd.
she goes to the cinema very often.
they seldom sing and dance.
известно , что расстояние от деревни до города равно 80 км?