The answer is 8 because 7.96 ends in a number over 5 making the 9 and 10 and increasing 7 to 8
Answer:
t = ln(0.5)/-r
Step-by-step explanation:
The decay rate parameter is missing. I will assume a value of 4% per day.
The exponential decay is modeled by the following equation:
A = A0*e^(-r*t)
where A is the mass after t time (in days), A0 is the initial mass and r is the rate (as a decimal).
At half-life A = A0/2, then:
A0/2 = A0*e^(-0.04*t)
0.5 = e^(-0.04*t)
ln(0.5) = -0.04*t
t = ln(0.5)/-0.04
t = 17.33 days
In general the half-life time is:
t = ln(0.5)/-r
Answer:
may sagot na pala ok bye thanks sa pts
Write these steps down
Positive times positive=positive
Negative times positive=negative
negative times negative= positive
when any two numbers that are negative it will always equal a positive.
Its a rule for math.
