Pls help if you only know the answer! Thanks! :)

Giving ad is congruent to bc and angle bcd is congruent to angle adc prove d e is going to ce

Write a division equation you could use to find a, the number of miles ava is in charge of. what is the value of a? write your answer is simplist form

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000