If you only used 13% then you used 4.42 pounds of dry ice.
-6 is the slope
Hope this helps
Opposite angles of parallelogram are equal.
sum of interior angles of parallelogram is 360 degrees.
Therefore,
A + B + C + D = 360
x + 145 + x + 145 = 360
x = 35
Therefore angle C is 35 degrees
