It’s C because
3*2 - 2* -1 =8
6+2=8
8=8
Well, to solve this problem, we can simply divide 8 and 1/2 by 2 and 3/4 so, let’s do that.
(8 1/2) / (2 3/4)
= (17/2) / (11/4). ***dividing two fractions together is the same thing as multiplying them but the second fraction is flipped.
(17/2) / (11/4)
= (17/4) * (4/11)
= 68/44
So, in conclusion, the answer to this question is: 68/44.
=
Answer:
C has a magnitud of 10.4 units and is directed 270° from the positive x-axis
Step-by-step explanation:
As it shows on the attached picture, the xA and xB have equal magnitudes but opposite directions, therefore they cancel eachother out in the x-axis.
However, the yA and yB are equal in magnitud, but have the same direction. So, the create a total vector the is completely on the y-axis and it's magnitude is 2*(sin(60°)*6)=10.4 units.
In order for C to cancel this vector, it's magnitude also needs to be 10.4 units, but pointing the other way. Therefore, the angle needs to be 270° from the positive x-axis.