Please help me answer this. I think that for the first one the answer is A, but I am not sure. There are two parts to the questi
2 answers:
P=(5,4). Q=(7,3). R=(8,6) AND S=(4,1)
PQ = (7-5 , 3-4) =PQ=(2,-1)
RS =(4-8 , 1-6) =RS=(-4 , -5). 4.RS=(-16 , -20)
PQ+4RS = (-16-2 , -19) ; PQ = (-18 , -19)
Vector

.

. So the sum is

.
For the second, the magnitude is the square root of the sum of the squares of the components. This is equal to

.
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