Quiz: 07.05e Vectors Operations x + 5.instructure.com/courses/8016/quizzes/267271/take A person walks 30 km west, then 20 km north, then 15 km east. How far did the person walk? 25 km 45 km 35 km 50 km D Question 19 1 pts a and have the same direction, and they both have a magnitude of 10. What must be true about a and b They are opposites, but not parallel. They are opposites and parallel. They are equal, but not parallel O They are equal and parallelcom O They are parallel, but not equal. They are not parallel, opposites, or equal. They are opposites and parallel. Question 17 1 pts A river flows at a speed of 12 m/s from north to south. A powerboat can move at a constant maximum speed of 23 m/s in still water. If the boat were headed east across the river at its maximum speed, what would the resultant velocity of the boat ne? O 12 m/s 26 m/s 36 m/s 0 52 m/s D Question 18 1 pts A person walks 30 kom west. then 20 kem north then 15 kmeas t. How far did the