The half-life of the element is 13 minutes, which means after 13 minutes, any starting amount decays to half. So element X decays with a rate k such that
Solve for k :
Now, we solve for t such that
There are 818 pennies in each box. you can get this by dividing 2456 by 3. hope it helped!
Answer:
2 hours
Step-by-step explanation:
first tap= 3hours
therefore work done is = 1/3
second tap= 6hours
therefore work done = 1/6
so, 1/3+ 1/6
=2/6 + 1/6
=3/6
=1/2
=2/1 hours
=2 hours
Answer:
(3*4) * 8
Step-by-step explanation:
3(4 x 8)
We can change the order
(3*4) * 8