Answer:
The half-life of a radioactive isotope is 140 How many days would it take for the decay rate of a sample of this isotope to fall to one-fourth of its initial value?
Step-by-step explanation:
I believe the answer is C (-2, 4).
Answer:
11 stories apart
Step-by-step explanation:
We let the "ground" be considered at height = 0
Anything above, is POSITIVE direction
Anything below, is NEGATIVE direction
8 stories are ABOVE, so that would be considered
+8
3 stores are BELOW, so that would be considered
-3
THe difference in height between them is:
8 - (-3) = 8 + 3 = 11
So, that is 11 stories apart (top and bottom)
Answer:
25
Step-by-step explanation:
12 x 100 = 1200
1200 / 48 = <u>25</u>
