Answer - Andrea is NOT correct.
I can explain it best by suggesting both Andrea and Blake start with 10 marbles.
If Andrea gave one (1) marble to Blake, Andrea now has 9 and Blake has 11.
Draw points J and K in the coordinate axis, and join them so that the top of the vector is point K.
the magnitude of the vector is just the length of the segment JK, so we can either write it as |JK| or |KJ|, it does not make any change.
Let O be the point in the x axis such that KO is perpendicular to OJ, as shown in the picture.
From the Pythagorean theorem:

units
since |OK|=|OJ|, the right triangle KOJ is isosceles, so the measure of KJO is 45°, which means that the angle of vector JK to the positive x axis is 180°-45°=135°
Answer: magnitude=

units, direction : 135°
Type it in on the app photomath it will show you the steps on how to do it
Answer:
its 2/6 simplified. lol
Step-by-step explanation:
Step-by-step explanations
explanation is in the image above hope this helps please mark me brainiest