The answer is tenth. It goes tenth, hundredth, thousandth... Etc.
To find x you divide both sides by the whole number. To find the perimeter you just add all the sides together.
1 4/5 is the answer to the question
It would be: (2x⁵)³ = 2x¹⁵
So, Your Final Answer would be 2x¹⁵
Hope this helps!
true (I don't know if this is the answer but it would be my guess)