First plug in the equations, then simplify/cancel out terms until you get the answer
It's C)12 squared because you have to look outside of the box
2/3+(-1/3)
2/3-1/3
1/3
Your answer is 1/3
A perfect fifth above a note has a frequency ratio of 3 to 2.
Therefore, we can set the proportion:
164.81 : x = 2 : 3
which gives:
x = <span>164.81 </span>× 3 ÷ 2
= 247.21
Hence, the perfect fifth above E₃ will have a frequency of 247.21Hz which corresponds to a B₃.
