Hello i think i could help!
So when looking at it if the quadrilateral has 2 pairs of opposite sides that are congruent (Same) Then its a parallelogram !
Vise versa
So the 16 is already whole, but you need to convert the .54 into a fraction. So, we put 54 over 100 (54/100) and then simplify it down to 27/50 and then put it together, so 16 and 27/50
The roots to this equation are: (2,0) and (24,0)
A; b; c; d = first; second; third; fourth shelfa + b + c + d = 250 cmb = 2a + 18c = a - 12d = a + 4in terms of a, plug all equations into originala + (2a + 18) + (a - 12) + (a +4) = 2505a + 10 = 2505a = 240a = 48b = 2(48) + 18b = 96 + 18b = 114 cm/1.14 m