Given that the vectors 6i + 15j and xi − 5j are parallel, the value of x is:
-3.
-2.
3.
2.
Given the vectors r and p. Evaluating r + p gives:
A.
B.
C.
D.
Given the vectors a and b, a + b is:
Given the vector OP = -4i + 3j, |OP| is:
25.
1.
5.
7.
Given that a = 3i + 4j and b = i − 2j, the |a + b| is:
4√5.
5√4.
5√2.
2√5.
