Answer:
either the first or second but id go with the second one!
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given:
The magnitude, v=12
The angle
it makes with the positive x-axis =
Now for a vector (x,y)
; and
Therefore:


Similarly:


Recall that:

Therefore: 
The vector in the form ai+bj is therefore:

Answer: Um, the answer is B, and C?
Step-by-step explanation:
Answer:
10x+15
Step-by-step explanation:
5 x 2x=10x
5x3=15