If you need to write a number as a decimal, it means that you need to write is a an x divided by a power of 10.
you can use this formula:

now let's multiply both sides by 10:

and simplyfy:
(by dividing the first fraction's elements by 5)

change improper fraction into a mixed number

and 1 over 3 is 0.33333...
so the answer is 1.333333 - we can also write it as 1.(3)
The mean age is 29. Without rounding, it would be 29.4285714286
.
Factor out 12x^3y^2
12x^3y^2(3y^2+5x^ 2 y z^2 -1)
So we have a 6 at the bottom, and the root is 3, so hmm how to take it out, simple enough, just let's get something to make the 6 a 6³, so it comes out of the root
so
3.95 × 3.81 = 15.0485
The road was 15.0485 miles long after the renovation.
Hope this helps!