The x component of some vector is 5.5 units, and its y component is -6.5 units. The magnitude of is closest to
A.8.1 units
B.8.5 units
C.12 units
D.9.9 units
E.7.9 units
Magnitude = sqrt [ 5.5^2 + ( -6.5)^2 ] = about 8.5 units
+244 
