Which property is used below 4xy^2 =8y^2 and 8y^2=72, then 4xy^2=72. a)reflexive property. b) substitution property. c) symmetric property. d) transitive property

20 points for the answer. this is for real , don't put random ! a rectangle has a length of 4 centimeters and a width of 7 centimeters. what is the effect on the perimeter when the dimensions are multiplied by 5? the perimeter is increased by a factor of 5. the perimeter is increased by a factor of 20. the perimeter is increased by a factor of 25. the perimeter is increased by a factor of 100.