Answer:
Option B.
Step-by-step explanation:
The given triangle is a right angle triangle.
In a right angle triangle,
In the given triangle,
Using Pythagoras theorem, we get
Taking square root on both sides, we get
Therefore, the correct option is B.
I think it would be 153/60 sec which is 2.55 seconds per beat.
Answer: 
Step-by-step explanation:
Let's re-write 3 as a fraction: 
Now all we have to do is multiply the numerator by the reciprocal of the denominator.
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Your answer is: 
I hope this helps!