Question

Scientist determine that Antarctica average winter temperature was 34.44 Celsius the difference between the temperature and Antartica highest record temperature was 49.44 degrees what was the highest record temperature

Answer 1

If the average temperature in Antacrctica were 34.44 °C, the ice sheet would have melted long ago. We expect you intend -34.44 °C.

Then the highest recorded temperature is
  -34.44 °C +49.44 °C = 15 °C . . . . . . . . . . about 59 °F