15 hours = 5400 seconds.
The expression: 12+15h-14h+4 can be simplified to 16+h by combining like terms
(15h + 1)(15h - 1)
226
225h2- 1 is a special case known as the difference of two squares.225h2= (15h)2and 1 = 12, so this expression is equal to (15h)2-(1)2.This factorises very neatly into two sets of brackets: (15h+1)(15h-1).
The answer to 25 plus 40 take away 15 H take away -80 equals -40. This is a math problem.
It is 15H.
15h
Mons Meg
The depositor himself.
15h 18m 00s, −45° 00′ 00″
The Right Ascension of Centaurus is roughly between 11h and 15h.
15h 00m 00s, +75° 00′ 00″ See link for Wikisky