T is Tuesday. TR is for Tuesday and Thursday.
It's a class for two days. Tuesday and Thursday. Most classes are either MWF or Tuesday and Thursday TR.
The day of the week which can be abbreviated as "Thu" is Thursday. Typically, it is abbreviated as "Thurs". It may also be recognized as "T", not to be confused with the "T" for Tuesday.
Tommorow
r=0,Tr-r = 0 = r(T-1), since T != 1, then T-1 is non zero so r must be zero.
The GPM is gallons per minute and TR is the ton of refrigeration. The GMP can be calculated from the TR by using the formula BTUH divided by 500 multiplied by Delta T.
I work from 8am-7pm almost every day M,T,W,TR,F which is 55 hours, and then I have meetings sometimes to attend last week it was 12 hours worth, but it is usually only 1-4 hours a week in addition to the 55 hours. And on Sunday's I have to have my lessons for the entire week planed. So on average I would say I work around 60hrs or more a week.
It means Tuesday and Thursday.
(2) T, (3) TR
In the context of the days of the week, "TR" typically stands for "Tuesday" and "Thursday." This abbreviation is often used in scheduling or academic settings to indicate classes or events that occur on those two specific days.
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You can find more than one, T ,TO, TOR, TR
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