81.56+n-2.55=0
81.56+n=2.55
n=2.55-81.56
n=-79.01
Answer:
625
Step-by-step explanation:
The answer is D because 35x3 is 105 + the $5 fee is 110
A 40% chance
Unless!
*wispers*
It’s a trick question?
Answer : The substances half life in days is, 5.6 days.
Step-by-step explanation :
Half life : It is defined as the amount of time taken by a radioactive material to decay to half of its original value.
All radioactive decays follow first order kinetics.
The relation between the half-life and rate constant is:

where,
k = rate constant = 0.1235 per days
= half-life
Now put all the given values in the above formula, we get:


Thus, the substances half life in days is, 5.6 days.