238 K = ___ degree Celsius
-45
-35
-25
-55
To convert a temperature in Kelvin to Celsius, we subtract 273 from it.
So, 238 K = 238 - 273 = -35 degree Celsius.
If n ∈ N, then 72n + 23n−3.3n−1 is always divisible by
In the figure below, it is given that chords AB = PQ. The ∠AOB=550, and ∠POQ=x0, find x.
Using suitable properties, find the value of following:
Simplify:
a) 126×55+126×45 b) 89×48 c) 49×12 [3 MARKS]