Answer:
ab=12
Step-by-step explanation:
p=perimeter
ab=cd ==> they're opposite sides of the rectangle, so they're equal
bc=da ==> they're opposite sides of the rectangle, so they're equal
p=ab+bc+cd+da
p=ab+cb+dc+da
p=ab+dc+2*cb
44=3z-3+3z-3+2*2z
44=3z+3z-3-3+4z
44=6z+4z-6
44=10z-6
10z=50
z=5
ab=cd=dc=3z-3
ab=3(5)-3
ab=15-3
ab=12
