What is the value of the expression of -(-4)

4

Step-by-step explanation:

two negative signs are equal to a positive sign

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.

i would say true? if the unit was informational and it "refreshed your understanding", then true.