1) To calculate maximum of f(t) function we first need to find derivative of it:
f(t)' = 10(e^(-t/8) + t*e^(-t/8)*(-1/8)) = 10(e^(-t/8) -t/8*e^(-t/8)) = 10e^(-t/8)(1-t/8)
the condition is:
f(t)' = 0 that means:
0 = 10e^(-t/8)(1-t/8)
10t/8*e*(-t/8) = 10*e^(-t/8)
t/8 = 1
t = 8
The answer is 8 days.
2) that percent we will get simply by expressing t=8 in our equation.
f(8) = 10*8*e^(-1) = 80/e = 29.43%
The line b is perpendicular to the line y, then the line a will also perpendicular to the line y. Then the correct option is B.
<h3>What is Geometry?</h3>
It deals with the size of geometry, region, and density of the different forms both 2D and 3D.
If the line a is parallel to the line b, then the slope of the line a and b will be same.
The line b is perpendicular to the line y, then the line a will also perpendicular to the line y.
Then the correct option is B.
The diagram is given below.
More about the geometry link is given below.
brainly.com/question/7558603
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Answer:
The room temperature is 25 degrees Celsius.
Step-by-step explanation: