в квадрате ABCD проведена диагональ AC.Докажите что точка М ,взятая на этой диогонали ,равноудалена от вершин B и D.

What kind of housework do you help your parents with?

Массовая доля хлора (как элемента) в поваренной соли равна 50%. Найдите массовую долю примесей в поваренной соли. 

Помогите исправить ошибки, умоляю! 1. We didn`t felt sad. We were happy. 2. - What are you doing? - I am looking at my cap.I can`t find it. 3. "NO", said the king. He said it much times. 4. Mrs Jackson`s sons want to be the teachers. 5. What a nice food! Your sister is a wonderful cook, isn`t she? 6. He`s washed his car, isn`t he? 7. Money don`t grow on trees. 8. We didn`t have to buy many bread? 9. Do you go ro school by a bus? 10. I don`t understand a last word in the text? Буду глубоко признательна, только помогите!!!