In the number 3.625, 3 represents ones, 6 represents tenths, 2 represents hundredths, and 5 represents thousandths. In which numbers does 6 represent 110 as much as it represents in the number 3.625? Select three that are correct.

Step-by-step explanation:

(LOOK AT THE PICTURE)

ΔABC, ΔDBA and ΔDAC are similar (AAA). Therefore the corresponding sides are in proportion:

We have AB = b, AD = 20, AC = 29 and DC = 21. Substitute:

            cross multiply

          divide both sides by 21

and in proportion:

We have BD = a, AD = 20 and DC = 21. Substitute:

          cross multiply

  divide both sides by 21