Answer: If rounded it would be 13 (together not rounded).... If not its would be 12(not rounded)
Step-by-step explanation: 6.8 is about to 7,.... and 0.0 is just 0..... and 0.6 is close to 0.5 all together would be 13 but if we round it would be 12
The greatest common factor is 4r so
4r(d-4)
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.
0.9 as a fraction is:

What place is the '9' in? It's in the tenth place.
0.9 can be said as

Nine

tenths

=