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Ray Of Light [21]
2 years ago
14

Think About the Process The diameter of a cylinder is 5 yd. The height is 4 yd. What is the first step to finding the volume of

the cylinder? Find the volume of the cylinder
What is the first step to finding the volume of the cylinder?
O A. Use the diameter to find the area of the cylinder
O B. Find the product of the diameter and the height
O C. Use th diameter to find the radius of the cylinder.
OD. Find thisum of the diameter and the height
The volume of the cylinder is yd
(Simplify your swer. Type an exact answer in terms of x)
fick to select
ur answer(s)
Mathematics
1 answer:
frez [133]2 years ago
4 0

Answer:

C

Step-by-step explanation:

Formula for volume of cylinder is :

  • V = πr^2h
  • We want to know Volume, now we have:
  • Diameter (d) , and r = d/2
  • Height
  • So the first step is use diameter to find the radius
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After an antibiotic tablet is taken, the concentration of the antibiotic in the bloodstream is modelled by the function C(t)=8(e
Alexxx [7]

Answer:

the maximum concentration of the antibiotic during the first 12 hours is 1.185 \mu g/mL at t= 2 hours.

Step-by-step explanation:

We are given the following information:

After an antibiotic tablet is taken, the concentration of the antibiotic in the bloodstream is modeled by the function where the time t is measured in hours and C is measured in \mu g/mL

C(t) = 8(e^{(-0.4t)}-e^{(-0.6t)})

Thus, we are given the time interval [0,12] for t.

  • We can apply the first derivative test, to know the absolute maximum value because we have a closed interval for t.
  • The first derivative test focusing on a particular point. If the function switches or changes from increasing to decreasing at the point, then the function will achieve a highest value at that point.

First, we differentiate C(t) with respect to t, to get,

\frac{d(C(t))}{dt} = 8(-0.4e^{(-0.4t)}+ 0.6e^{(-0.6t)})

Equating the first derivative to zero, we get,

\frac{d(C(t))}{dt} = 0\\\\8(-0.4e^{(-0.4t)}+ 0.6e^{(-0.6t)}) = 0

Solving, we get,

8(-0.4e^{(-0.4t)}+ 0.6e^{(-0.6t)}) = 0\\\displaystyle\frac{e^{-0.4}}{e^{-0.6}} = \frac{0.6}{0.4}\\\\e^{0.2t} = 1.5\\\\t = \frac{ln(1.5)}{0.2}\\\\t \approx 2

At t = 0

C(0) = 8(e^{(0)}-e^{(0)}) = 0

At t = 2

C(2) = 8(e^{(-0.8)}-e^{(-1.2)}) = 1.185

At t = 12

C(12) = 8(e^{(-4.8)}-e^{(-7.2)}) = 0.059

Thus, the maximum concentration of the antibiotic during the first 12 hours is 1.185 \mu g/mL at t= 2 hours.

4 0
2 years ago
Over the summer, for every 14 okra seeds Dana planted, 9 grew into plants. If he planted 210 okra seeds, how many grew into plan
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210s(9p/14s)=135p

So 135 seeds grew into plants.
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viva [34]

Answer:

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Step-by-step explanation:

= 3 : 12 , 48 : 192

= 3/12 , 48/192

= 1/4 , 1/4

= 1 : 4 , 1 : 4

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Step-by-step explananation:

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