Determine the values of x and y for which abcd is a parallelogram.

a) x = 140, y = 40
b) x = 60, y = 20
c) x = 20, y = 20
d) none of the above.

Liam's parents are driving three times as fast as liam is biking, but they left later than he did. if his parents caught up with him two hours after he left, how much later than liam did they leave?

Ineed if you could explain and give me the answer you! this needs done

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?