Дано раствор массы 200 г с массовой доли 2% соли.Найти массу растворенный соли

х(в квадрате)+14х+45=0 Решите уравнение!

Помогите вставить his, her, mine, yours 1 Have you seen ... watch? She cant find it. 2 Whose coat it this? - Its ...! 3 I dont like these jeans. ... are much better 4 Thats your dictionary on the desk. ... is in his bag. 5 Liza usually cleans ... shoes, James clean ... , and I clean ... . 6 This is my house and ... is round the corner.

можно ли эры назвать этапами развития жизни на земле