Identify the new coordinates of polygon ABCD after a translation of 2 units down and three units right. Please help I don't know what to do for this question :'(

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.