hi. i need answer on the questions below. please take note that and are unit vectors. please provide explanation or solutions if needed so i can better understand it. thank you!

get its negative. Which of the following expression shows this sequence of operations? A. (-A)10 B. 10(-A) C. -(10A) D. (-10)A 20. Find the dot product of these two vectors: A = 10i meters, B = 10j meters A. O B. -10 units C. 10 units D. 100 units 21. Find the dot product of A and B. (Scalar Notation Form) -1 A A. 1 unit B. 2 units C. 3 units D. 4 units E. No Answer 22. Find the magnitude of the cross product of A and B. (same photo on no. 21) A. 5 units B. 6 units C. 7 units D. 8 units E. No answer 23. Find the dot product of A and B. 2 B A 0 A. 1 unit B. 2 units C. 3 units D. 4 units E. No Answer 24. Find the magnitude of the cross product of A and B. (same photo on no. 23) A. 1 unit B. 2 units C. 3 units D. 4 units E. No Answer 25. Given with three vectors, A = 6 m, 60 deg N of E B =-51 + 2j m C = 7 m, S Find (A . B)C - A . (B x C) A. 22.457im B. 32.256j m C. -34.698i m D. -42.468j m E. No