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:
Answer is 4x+15
Step-by-step explanation:
4(6−2x)−3(3−4x)
Distribute:
=(4)(6)+(4)(−2x)+(−3)(3)+(−3)(−4x)
=24+−8x+−9+12x
Combine Like Terms:
=24+−8x+−9+12x
=(−8x+12x)+(24+−9)
=4x+15
34/81 = 0.420
Therefore the chance is 0.420
Answer:
238 miles
Step-by-step explanation:
Subtract total cost with truck fee cost which makes it 228.48 then divide by the cost of each mile driven which is 96 cents, so it would be 238 miles
Hope this helps :)