To be deductible, a business expense must be both ordinary and necessary. An ordinary expense is one that is common and accepted in your trade or business. A necessary expense is one that is helpful and appropriate for your trade or business. An expense does not have to be indispensable to be considered necessary. It is important to separate business expenses from the following expenses:
A duple meter metronome that is useful for 2/4, 2/8, 2/2 (cut time), and 6/8 when it has two beats per measure.
For this reason, anyone who compares a 40 yard split time in a 100 meter event and compares it to reported hand timed 40 yard dash marks is making a big mistake. If you want compare the 40 yard split of a runner in a 100 meter event, subtract .25 seconds from the recorded time.So, Olympic runner Justin Gatlinâs 4.42 forty yard dash split recorded during his Gold Medal winning 9.85 100 meter run, would convert to a 4.17 forty yard dash by football standards.or this reason, anyone who compares a 40 yard split time in a 100 meter event and compares it to reported hand timed 40 yard dash marks is making a big mistake. If you want compare the 40 yard split of a runner in a 100 meter event, subtract .25 seconds from the recorded time.