Даны векторы "а" ⃗ (10;2)и "b" ⃗ (1;-1). Выполните действие над векторами: а) 0,5"а" ⃗+ 5b ⃗
б) "а" ⃗- b ⃗
в) "а" ⃗+ b ⃗
применяет правила сложения векторов
применяет правила вычитания векторов
применяет правило умножения вектора на число
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Pls brainliest will be awarded if answer is correct

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?

C. using a standard deck of 52 cards, the probability of selecting a 4 of diamonds or a 4 of hearts is an example of a mutually exclusive event. true of false