Distance = rate * time
580 = (80+65) * t
T = 4 hours
Answer:
Option C, F(x) = (x+2)/(x+1)
Answered by GAUTHMATH
Answer:
5.1 days
Step-by-step explanation:
Given in the question,
initial amount of substance = 34 grams
k-value = 0.137
To find the half life of this substance we will use following formula

here N(0) is initial amount of substance
t is time in days
Plug values in the formula

1/2 = e^{-0.137t}
Take logarithm on both sides
ln(1/2) = ln( e^{-0.137t})
ln(1/2) = -0.137t
t = ln(1/2) / -0.137
t = 5.059
t ≈ 5.1 days (nearest to tenths)
The answer would be 6.4% because you have to do 16% of 40 and it will give you 6.4 and as a percent it is 640%