The same number, -40 C.
F = 9/5 C + 32
C = 5/9 (F -32), F is -40
C = 5/9 (-40 -32)
C = 5/9 (- 72)
C = - (5 x 72) / 9
C = - 360 / 9
C = -40
In your head: "twice C minus 10% plus 32 is F"
2 x -40 C = -80; -80 - (-8) = -72; -72 +32 = -40 F
Similarly, 2x100C-20+32= 212F, boiling point of pure water at STP
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Use this formula to convert from Celsius to Fahrenheit:
F=1.8C+32
Use this formula to convert from Fahrenheit to Celsius:
C=(5/9)(F-32)
-40*F=-40*C. This is the only place on the thermometer where the two number values of degrees are the same and the temperatures are equal.
40 degrees Celsius is equal to 104 degrees Fahrenheit.
40 degrees Celsius is equal to 104 degrees Fahrenheit.
104 degrees Fahrenheit is approximately equal to 40 degrees Celsius.
40 degrees below Celsius is equal to -40 degrees Fahrenheit.
-40 degrees Fahrenheit is equal to -40 degrees Celsius.