Question 1. determine whether the vectors u and v are parallel, orthogonal, or neither. u = < 10, 6> , v = < 9, 5> ? question 2. find the angle between the given vectors to the nearest tenth of a degree.

u = < 6, -1> , v = < 7, -4>

20.3°/ 10.2°/ 0.2°/ 30.3° question 3. express the complex number in trigonometric form. -6i 6(cos 0° + i sin 0°) 6(cos 270° + i sin 270°) 6(cos 180° + i sin 180°) 6(cos 90° + i sin 90°)

The correlation coefficient between the number of students and marks obtained in end semester exam. (13 marks) give the statistical meaning of the relationship between the number of students and marks b. obtained in end semester exam. (3 marks) draw the number of students and marks obtained in end semester exam scatter diagram c. (4 marks) check list write your name and id corectly write the question number properly use your own calculator. show all the steps to solve the problems. use the correct formula. answer in provided time. don't use your mobile for any purpose. write your answer up to two decimal places