Answer:
A raiz da equação 2x - 1 = - 3, é: ( U = Z)
Step-by-step explanation:
A whole circle is 360 degrees. So add up the known degrees (115+105+60)=280degrees
Then 360-280=80 degrees
D
Step-by-step explanation:
you subtract 15 and 11 = 4 then subtract 9-1 is 8 and then you find the common denominator
B is the answer I think is correct