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13 - Unlucky For Some
I think you mean.... * What is 13 s in the u s f ... which would out as "13 Stripes in the United States Flag".
-6 + f = 13 f = 13 + 6 f = 19
"13k on a f" likely means 13,000 miles on a vehicle's odometer. It is a common way to express the mileage of a car.
If you mean: (3, 7) and (-2, -5) then the distance works out as 13
The difference is 43o F
f 14
13 is unlucky number for some
13 is Unlucky For Some
13 = stripes on the American flag.
13 stripes of the American flag
13 Unlucky For Some (bingo call)