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Aleks04 [339]
2 years ago
15

Brainliest if it is right

Mathematics
2 answers:
Wittaler [7]2 years ago
7 0
The answer is. 6.28ft^2 use formula to solve
VMariaS [17]2 years ago
4 0
The answer is 6.28ft^2

You would use the formula 3.14r^2/2
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Helen [10]

f(3) = 1.9

Solution:

Given function:

$f(x)=\frac{14}{7+2 e^{-0.6 x}}

To find f(3):

Substitute x = 3 in the given function.

$f(3)=\frac{14}{7+2 e^{-0.6 (3)}}

$f(3)=\frac{14}{7+2 e^{-1.8}}

Let us first simplify 2e^{-1.8}.

Apply exponent rule: a^{-b}=\frac{1}{a^{b}}

$ 2e^{-1.8}=2\frac{1}{e^{1.8}}$

The value of e^{1.8}=6.04964. (using calculator)

$\frac{2}{e^{1.8}}=\frac{2}{6.04964}=0.33059

2e^{-1.8}=0.33059

Substitute this value in f(3).

$f(3)=\frac{14}{7+0.33059}

$f(3)=\frac{14}{7.33059}  

$f(3)=1.90980

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Hence the value of f(3) is 1.9.

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3 years ago
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