Answer:
Step-by-step explanation:
Plot the points(0 ,-4) , (5 , -5) and (-5 , -3 ) in the graph and join the points.
<span>As the age of the U-235 sample is 2.631 billion years, and the half-life of U-235 is 713 million years, the sample has undergone 2.361 X 1,000,000,000 / 713 X 1,000,000 = 3.69 half lives. In each half-life the sample reduces to half its original weight according to the radioactive Half-Life Formula:
ln (Nt /N0) = -kt, where N0 = mass of the original weight of radioactive material, Nt = mass of radioactive material at time t, k = decay constant and t = time interval . We have to put Nt/N0 = 1/2 for time interval = half-life.</span>
Answer:
hmmm 38
Step-by-step explanation:
?
The answer is D because 42 / 6 = 7 and the power ( ^X) can cancel out each other
I would guess it would be
7 and -7
