1) Answer:

2) Answer:

The answer for first equation is, option B.
and the Answer for Second equation is option D.
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Answer:
5
Step-by-step explanation:use the cube to count(cube is in the corner.)
<span>(b^4)^2 = b^(4x2) = b^8
answer
b^8</span>
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.