When do you first start to see a moderate amount of overlap in these two graphs?
when the difference in
means is around 40
when the difference in
means is around 20
when the difference in
means is around 5

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g