Step-by-step explanation:
Given:
Sleep hour = 7.5 hr
Assume;
School hour = 6 hr
Homework = 2.5 hr
Eating and playing = 5 hr
Free time = 3 hr
Find:
Percent of each school day
Computation:
Sleep hour = 7.5 hr = [7.5/24]100 = 31.25%
School hour = 6 hr = [6/24]100 = 25%
Homework = 2.5 hr = [2.5/24]100 = 10.41%
Eating and playing = 5 hr = [5/24]100 = 20.83%
Free time = 3 hr = [6/24]100 = 12.5%
Answer:
a. N(t) = 1.25 (1/2)^t/7
b. 0.1160933038mg.
Step-by-step explanation:
The formula for half life =
N(t) = No(1/2)^t/t½
Where N(t) = Amount of Substance left
No = Initial amount not Substance
t = time after t years
t½ = Half life of the substance
From the question:
No = 1.25mg
t½ = 7 years
a. Find a model for the amount of albuterol left in the body t hours after an initial dose of 1.25 mg.
N(t) = No(1/2)^t/t½
No = 1.25mg
t½ = 7 years
N(t) = 1.25 (1/2)^t/7
b. How much albuterol is left in the body after 24 hours?
Using the model in the above question
N(t) = 1.25 (1/2)^t/7
N(t) = 1.25(1/2)^24/7
N(t) = 1.25(0.5)^3.4285714286
N(t) = 0.1160933038mg
Therefore, the quantity of albuterol left in the body after 24 hours is 0.1160933038mg.
Answer:
14.42
Step-by-step explanation:
17.00 x .80 20% off means price is 80% (or .80) of price
=13.6
13.6 x .06 = .82 sales tax
13.60 + .82 = 14.42 sales price plus sales tax
Answer:
-2
Step-by-step explanation:
Bc÷2a
5×-4÷2×5
-20÷10
-2
