the temperature of a room is 12 pieces and out and outside temperature is 36 degree Celsius the temperature of this room increased at the rate of 4 degree Celsius for 30 minutes
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If it's -20 degrees outside and it decreases 3 degrees what
temperature is it? I know the answer is -23 degrees but it seems like
it should be -17 degrees. When do you have to change the sign into
addition?
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