Предмет: Алгебра, автор: ollllyapettrola

Срочно помогите!!!!!

У скриньці є 4 червоні, 3 синіх і кілька білих кульок.Ймовірність того,що навмання витягнута біла кулька,становить 2/9 всіх кульок .Скільки білих кульок?

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Автор ответа: manyny06

Ответ:

решение смотри на фотографии

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