<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>
12.96 can be rounded to 13 if you're rounding to the nearest tenth and ones digit. If it is the tens digit, 12.96 can be rounded to 10.
Answer:
Step-by-step explanation:
As per the given question
As we know that
f(x) and x are related by following equation
where
b is the common ratio
Now first we have to compute the value for b which are as follows
Like if we take the ratio by this method than it comes 1.25
Therefore the common ratio, b = 1.25
So,
a = 5,120
Hence, the equation which model the relationship between the number of weeks and the number of viewers is
Answer: The answer is C. 5
Step-by-step explanation:
Just took the test on edg.
1.1
×
2.4
____
44
+
22
____
.66
I think this is it I did this when I was in 5th grade so I don't remember that much might wanna check with an adult.
