Half-time (music) each measure (a whole note) is divided in two by the bass drum (half note), each half is divided in two by the snare drum (quarter note, collectively the bass and snare divide the measure into four), and each quarter note is divided in two by a ride pattern (eighth note). "Half"-time refers to halving this division (divide each measure into quarter notes with the ride pattern), while "double"-time refers to doubling this division (divide each measure into sixteenth notes with the ride pattern). A classic example is the half-time shuffle, a variation of a shuffle rhythm, which is used
Time value of money multiply the PV of an ordinary annuity by (1 + "i"). The following formula use these common variables: The future value ("FV") formula is similar and uses the same variables. The present value formula is the core formula for the time value of money; each of the other formulae is derived from this formula. For example, the annuity formula is the sum of a series of present value calculations. The present value ("PV") formula has four variables, each of which can be solved for by numerical methods: The cumulative present value of future cash flows can be calculated by summing