В 200г раствора содержится 10г соли. Какова массовая доля соли в растворе?

Угол АСВ=90 градусов, СD-высота проведенная из угла АСВ, АВ=15 см, АD= 5,4 см, найти СD и периметр треугольника АВС

The world we live in can be a dangerous one.Some people need to have a bodygurd to protect them and their families. Politicians in almost all countries are guarded by bodyguards. The President of the United States never goes anywhere without Secret service agents. Important business people or stars may also have bodyguards to protect them. A bodyguard is a dangerousjob. Good bodyguards are prepared to risk their own lives to protect their clients. Some bodyguards wear bullet-proof vests.Bodyguards also teach their clients how to avoid dangerous situations. The bodyguards usually stay with their clients wherever they go. They canprotect their clients homes and offices.

Реши  уровнение:  14*(x+2)-39=45