Which property is used below? if 4xy2 = 8y2 and 8y2 = 72, then 4xy2 = 72 -reflexive property -substitution property -symmetric property -transitive property

The lengths of all sides of a triangle are integers when measured in decimeters. one of the sides has length of 1 dm and another of 3 dm. find the perimeter of the triangle.'

W-16=-12 solve each one step equation plz

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236