Hi! I can help you with 
The formula for finding the perimeter of a rectangle 
P= 2(a+b) 
Plug in the numbers and 
P=2(18+15)
(
P=2(33)
P=66
Hope it's correct!
Answered by
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Add 4.1 To 5.6 =9.7 That is your answer. 9.7 kilograms.
Answer:
10 1/9
Step-by-step explanation:
The result to the above question is 10 1/9
The mode is 89 because it is repeated twice. there are no other numbers that are repeated more then twice.
I hope this helps :)