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dlinn [17]
3 years ago
5

The number of students in an school building that have the flu after t days is given by the function

Mathematics
1 answer:
gulaghasi [49]3 years ago
6 0

Step-by-step explanation:

p(0) =  \frac{800}{1 + 49 {e}^{ - 0.2 \times 0} }  =  \frac{800}{1 + 49}  =  \frac{800}{50}  = 16

200 =  \frac{800}{1 + 49 {e}^{ - 0.2t} }  \\ 200(1 + 49 {e}^{ - 0.2t} ) = 800 \\ 200 + 9800 {e}^{ - 0.2t}  = 800 \\ 9800 {e}^{ - 0.2t}  = 600 \\  {e}^{ - 0.2t}  =  \frac{3}{49}  \\  ln( {e}^{ - 0.2t} )  =  ln( \frac{3}{49} )  \\ -  0.2t =  - 2.793 \\ t = 13.96 = 14

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3pt=_____ centimeters                          40oz=___________lb
deff fn [24]
Not sure what pt means
the other unts are all liquid measures and cm is a measure in legnth 


8oz=1 pound so 
40/8=pound=5
40oz=5lb

1000ml=L
1500/1000=1.5L
1500ml=1.5L

1L=1.056qt
1.056 times 12=12.68
12L=12.68qt

5 0
3 years ago
If f(x)=5x-2 and g(x)=2x+1, find (f+g)(x)<br> A.7x-3 <br> B.3x-1 <br> C.7x-1 <br> D.4x-3
Gwar [14]

Answer:

(f+g)(x) = 7x -1  (Answer C)

Step-by-step explanation:

Rewrite these two functions, one above the other, for ease in adding:

f(x) = 5x - 2

+g(x) =2x + 1

------------------

(f+g)(x) = 7x -1


6 0
3 years ago
What is c=(s+b/4) solve s?
konstantin123 [22]

Answer:

s =c-b/4

Step-by-step explanation:

this is what i think you wanted

3 0
3 years ago
The exchange rate from Pounds Sterling to Australian Dollars is £1=$1.82
andreyandreev [35.5K]
£164.83. Devide 300 by 1.82.






5 0
3 years ago
Find the area and the circumference of a circle with diameter 3 ft.
Zigmanuir [339]

Step-by-step explanation:

circumference of a circle

2×pi×r

area of a circle

pi×r²

r (radius) = diameter/2 = 1.5ft

we shall assume pi to be 3.14

circumference is

2×3.14×1.5 = 3.14×3 = 9.42 ft

area is

3.14 × 1.5² = 3.14×2.25 = 7.065 ft²

3 0
3 years ago
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