x-4y=-6

3x-y=8 

Химическому элементу, степень окисления которого в водородном соединении равно -1, соответствует схема распределения электронов в атоме: 1) 2,8,1 2) 2,8,4 3) 2,8,7 4) 2,8,8 Вообще как понять это задание? О.о

хорда MN делит окружность радиуса равного 8, на две неравные дуги. Она видна из любой точки меньшей дуги под углом 120 градусов. Какова длина хорды MN ?

Срочно до завтра!!!!!!!!!

Answer the questions.
1.    What would you have to do if you worked as a dishwasher?
2.    What would you have to do if you worked as a costumed character?
3.    What would you have to do if you worked as a ranger?
4.    What would you have to do if you worked as a cook?
5.    What extra opportunities would each job give you?
6.    Which of these jobs do you find the most / the least exciting? Why?
7.    Which of these jobs do you find the easiest / the most difficult? Why?
8.    Which of these jobs would you like to try? Why?