I hope this helps you
(-2/4+3/4).1/5
1/4.1/5
1/20
The percentage of the radioactive isotope left is 25.0000%.
<h3>What is the half life?</h3>
The half life of a radioactive isotope is the time that will elapse before only half of the number of original isotopes will remain.
Now;
We are told that;
Half life (t1/2) = 55 days
Time taken (t) = 115 days
Ratio of isotope remaining = N/No
Thus;
N/No = (1/2)^t/t1/2
N/No = (1/2)^115/55
N/No = (1/2)^2
N/No =1/4
Hence, the percentage = 1/4 * 100/1 = 25.0000%
Learn more about half life of an isotope:brainly.com/question/16387602
#SPJ1
Answer:
+65
Step-by-step explanation:
If you distribute negative with negative it gives you positive
Answer:
64 softballs
Step-by-step explanation:
Coach Beard currently already has 24 softballs.
When she orders 2 more buckets with 20 in each, that's another 20 + 20 = 40 softballs added to the original 24. So, let's add these two numbers:
24 + 40 = 64
The answer is 64 softballs.
<em>~ an aesthetics lover</em>
6. 13
7. 262
8. ? For the first part but the sum is $118
9. ?
