Answer:
49
Step-by-step explanation:
side 1 = |18-3|= 15
side 2 = |12-3| = 9
side 3 = |16-4| = 12
side 4: 
perimeter = 15 + 9 + 12 + 13,4= 49,4 = 49
Answer: The answer is 5.6d+ 2.1
Step-by-step explanation:
Add then subtract then add then multiply then subtract then divide.
Answer:
They have a 0 in the ones place
Step-by-step explanation:
Because you start with 10, you will always have a 0 at the end.
30, 90, 270, etc.
Answer:

Step-by-step explanation:
