The sum of a number divided by 2 and 13 is 30

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

41/17 as a decimal rounded to the nearest hundredth

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m