Answer:
positive 3
Step-by-step explanation:
3m+21=6m
=>21=6m-3m
=>21=3m
=>7=m
Therefore option A is the answer
Answer:
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
These are basic properties of parallelograms and there's really no way to explain other than memorizing them.
Answer:$1.32
Step-by-step explanation: