Answer: 0.12 Kilometer
Step-by-step explanation:
120 divided by 1000
Y=-2x-1
Move all terms that don't contain wired to the right side and solve
Cicumference = Dπ or 2rπ
thus if r = 2.2
then C = 2 (2.2)π
= 4.4π
D is the answer
<span>You would have to wait 318 years for 1/5 (20%) of the Radium to disappear. 1590 is the point where half of the Radium would decay, so if you take 20% of that, it would equate out to 318 years. Radium has a long half life!</span>
7 is the lowest common multiple i think
