Помогите решить 1. (7а-2,8)×(4.9+3,5а)=0 2. (-2а+6,6)×(4,2а-8,4)=0 - №23710513

Помогите решить
1. (7а-2,8)×(4.9+3,5а)=0
2. (-2а+6,6)×(4,2а-8,4)=0
- Предмет:
  Алгебра
- Автор:
  kendalldhte
- 6 лет назад

Ответы 1

1. (7a - 2,8) * (4.9 + 3,5a) = 0 7a - 2.8 = 04.9 + 3.5a = 0a = 2.8/7a = -4.9/3.5a = 0.4a = -1.42. (-2a + 6,6) * (4,2a - 8,4) = 0-2a + 6.6 = 04.2a - 8.4 = 0a = 6.6/2a = 8.4/4.2a = 3.3a = 2
- Автор:
  mackboyer
- 6 лет назад
- 0
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5 . Read one text more carefully, then answer the questionswith a partner who read the other text. 1 When were Milton and Hetty born? 2 What were their parents like? 3 How did Milton and Hetty become so wealthy? 4 Who wore ragged clothes? 5 What was the meanest thing Hetty did? 6 Why did Milton like making a lot of money? 7 Who did they marry? 8 When did they die? How old were they? 9 Who left the most money? Who did they leave it to?

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