On a plane flat surface with "up" given as +y and "right" given as +x, we add two vectors. One of them has components (2, 4) and the other is (-1,-5). What is the length of the resulting vector, and what direction is it pointing in? The vector has length of and is pointing up and to the right at 45°. The vector has length of and is pointing down and to the right at 45°. The vector has length of 1 and is pointing down and to the left at 45°. The vector has length of 1 and is pointing up and to the left at 45°.

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