I NEED HELP! PLZ Given: Circle O has a diameter AB with points A(5, 19) and B(17,3). Circle O has a chord CD with points C(11, 1) and D(20.6, 8.2). Use the theorem that states, "If a diameter of a circle is perpendicular to a chord, then the diameter bisects the chord." Which is a key statement in the proof that diameter AB bisects chord CD?

The mountain springs water company has two departments, purifying and bottling. the bottling department received 67,000 liters from the purifying department. during the period, the bottling department completed 65,000 liters, including 3,000 liters of work in process at the beginning of the period. the ending work in process was 5,000 liters. how many liters were started and completed during the period?