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3 years ago

4000 peoplw attended a football game. If 4% of the people who attended were teenagers, how many teenagers attended the game?

Mathematics

2 answers:

LUCKY_DIMON [66]3 years ago

6 0

160 teenagers attended the game

goldfiish [28.3K]3 years ago

4 0

160 teenagers. 4000 times 5% is 160

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Firdavs [7]

Assuming

$f(x)=\dfrac1{(4+x)^3}$

Recall that for $|x|$ ,

$\displaystyle\sum_{n\ge0}x^n=\frac1{1-x}$

Denote the above by $s(x)$ . Then

$s'(x)=\displaystyle\sum_{n\ge1}nx^{n-1}=\frac1{(1-x)^2}$
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Now,

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3 years ago