Abranch of musicology which focuses on either the scienrific or a philosophical perspective of music is called

If (a, b) is the solution to the system of equations shown above, and a and b are integers, then what is the value of a+b?

An item not normally included in ansi recommendations, but recommended by other groups is: a) a syringe b) a blood pressure monitor c) a defibrillator d) all of the above

Find the number if 3.7% of it is 37% of 37.