after six half-lives what percentage of a radioactive sample will remain?

a) 0%-1%
b) 1%-3%
c) 3%-6%
d) 6%-10%

bjc what the hell are you accomplishing? Nothing. So you're the one who needs to go "fjc" yourself. Also, you REALLY need to work on your spelling and grammar.

I thought this waz fur school but ders so much cussing holy poo

is it b?

Fair..... And by the way the correct answer is B

Amt. left = (1/2)^6 = (1/2)^3*(1/2)^3 =1/8 * 1/8 = 1/64

(1/64) * 100% = 1.65%

I think it is B but please let me know if I am wrong.

Adds exactly, he needs more school.

bjc get a "fjcing" life and go to school and do you HORRIBLE spelling there. Now really! You need school, to LEARN and your grammer. Got it? Oh I'm not done yet. Knowing that you are stupid can really mess with you so here's something to make you feel better" GET A FRIKING LIFE AND STOP CUSSING PEOPLE OUT, IF YOUR GOING TO AT LEAST SPEEL RIGHT! You're welcome!

EB: it's B

How do you get 1/8