The answer is
x+y=10
20x+30y=280
Because there are 4 cups in a quart, 5 quarts would equal 20 cups.
Answer:
Please find attached pdf
Step-by-step explanation:
So the problem ask to what could be the right choice among the three that could support the said statement in you problem that tells that an angle that has a supplement also has a complement and the best answer would be that it is ALWAYS be TRUE. I hope you are satisfied with my answer