I believe it is 4 to 12
4 being the black portion and 12 being the white
1/49=x^2 where x is the side of the square
1/49=(1/7)^2, so the side length of the square is 1/7
Answer:

Step-by-step explanation:
We want to find the solution to the equation:

Rearrange:

Combine like terms:

We can add five to both sides:

And divide both sides by five. Therefore:
