(2 ) (20 points) for an n x n matrix, a, prove that ta being one-to-one is equivalent to the ta being onto.

Adifferent website gives the cost for the first train as £56.88 and the second train as £20.11 with a £9.50 charge for cycle storage for the whole trip. how much would the journey cost you?

Yesterday, george drank 1 small bottle and 2 large bottles, for a total of 1,372 grams. the day before , he drank 1 small bottle and 1 large bottle, for the total of 858 grams. how many grams does each bottle hold?

Simplify the given expression leaving the answer in improper fraction form. 2/3+5/6