AEB = CED = 180 - 45 - 14 = 121 deg
EDC = 180 - 121 - 27 = 32 deg
So angle D is 32 degrees
A(t)=A0*(1/2)^(t/30)
where t=elapsed years
A0=initial mass at t=0.
12 = 7+5 Hope this helps:)
Answer: 0.27
Step-by-step explanation:
Just divide 54 by 2 and a decimal point in front of it.
