The GCF of 32 and 84 is 4.
Velocity = distance/time
v = d/t = 1/0.5 = 2m/s
Your answer would be ( -12/5 x + 2 )
If

, then angle

is obtuse and triangle with sides a, b, c is obtuse triangle.
In an arbitrary triangle can be only one obtuse angle, and the side which lies opposite to the largest angle is the largest. Then since <span>angle

is opposite the side of length a</span> you can conclude that a>c and a>b.