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2 answers:
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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.
Answer:
The option that no represent a linear function is
Step-by-step explanation:
we know that
The graph of a linear function is a straight line
The equation of a linear function in slope intercept form is equal to
where
m is the slope
b is the y-intercept
<u><em>Verify each case</em></u>
option 1) we have
This option represent a linear function
where
m=3
b=-2
option 2) we have
This option represent a linear function
where
m=1
b=0
This option represent a linear direct variation function
option 3) we have
This option not represent a linear function
This option represent a exponential function
option 4) we have
This option represent a linear function
where
m=3
b=0
This option represent a linear direct variation function