1. Железная руда содержит 7,8% железа. Найдите массу железа в 3т руды.

СОЧЕНЕНИЕ ПО АНГЛИЙСКОМУ ЯЗЫКУ  200-250 СЛОВ НА ТЕМУ ШКОЛЬНАЯ ФОРМА

Помогите переделать в косвенную речь!!! 1.Do you know that the gloves you are wearing aren`t a pair? - She. 2. Don`t touch that knife,Kat. - He 3. Where were you last week, Mr.White? - Betty 4. Why did you travel econom class. - He 5. Did you play for your school team? - Kate 6. I found an old koman coin in the garden yesterday. - He 7. Will you go to the stadium next Tuesday? - Sam

if anything goes wrong, ... held responsible.
A. are being held
B. are to be
C. will be
D. will have been
E. were

в арифметической прогрессии а2=5, а4=9

Найти: а8=?