X=1 so it is 1×1×1=1 so.... it is 19+1
A.3n+4+3n+4+4n
=3n+3n+4n+4+4
=10n+8
B.11n+4+n-12
=11n+n+4-12
=12n-8
C.6(6n-2)
=36n-12
D.4(3n-2)
=12n-8
E.4n+22-12+8n
=4n+8n+22-12
=12n+10
so,B and D are the expressions that are equivalent to 12n-8.
Answer:
20 units
Step-by-step explanation:
s = 8
Perimeter = s + s + 

= 8 + 8 + 4
= 20 units
Answer:
Ty, you too!
Step-by-step explanation:
Hope you have a good day.
Answer:
.03%
Step-by-step explanation: