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3 years ago

10

A cell phone company orders 500 new phones from a manufacturer. If the probability of a phone being defective is 2.6%, predict h

ow many of the phones are likely to be defective. Round to the nearest whole number.

2 answers:

Novosadov [1.4K]3 years ago

4 0

I think the answer would be 13

bagirrra123 [75]3 years ago

3 0

500 divided by .026
The answer would be exactly 13 defective cellphones.

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1 year ago

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kupik [55]

$\bf cos(\theta)=\cfrac{adjacent}{hypotenuse}
\qquad 
% tangent
tan(\theta)=\cfrac{opposite}{adjacent}\\\\
-------------------------------\\\\
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now, let's use the pythagorean theorem to find the opposite side.

$\bf \textit{using the pythagorean theorem}\\\\
c^2=a^2+b^2\implies \pm\sqrt{c^2-a^2}=b\qquad 
\begin{cases}
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b=opposite\\
\end{cases}
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ok... so, which is it? the +/-? well, we also know that <span>sin(t) >0, namely that the sine of the angle is positive, so, then is +4 then.

</span> $\bf tan(\theta)=\cfrac{opposite}{adjacent}\qquad \qquad tan(t)=\cfrac{4}{-3}\implies \boxed{tan(t)=-\cfrac{4}{3}}$ <span>
</span>

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