Answer:
That is probably tellurium 134 which has a half-life of 41.8 minutes but we'll stick with the 40 minutes you stated.
240 / 40 minutes equals precisely 6 half-lives.
Every half-life reduces a radioactive substance by one half.
So 6 half-lives reduces it by 1 / (2^6) which equals 0.015625
576 * .015625 = 9 grams exactly.
Step-by-step explanation:
10 and 9 over 20 is the correct solution
The correct answer is C. increase by an equal number every week
Answer: D
Step-by-step explanation:
The answer is (i) and (ii). In the first graph, as x approaches very large values such as infinity, the y-value will also approach infinity. In the second graph, as x approaches infinity, the y-value again approaches infinity.
On the contrary, the third graph approaches large negative values as x increases. It approaches negative infinity.
Answer:
x = -25/3
Step-by-step explanation:
The equation simplifies to -3x - 25 = 0, so
-3x = 25 =>
x = -25/3
