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3 years ago

15

Fred lives on the 16th floor. The elevator goes up one floor each 10 seconds. It stops at the fifth floor for 1 minute for peopl

e to get out. How long does it take Fred to get to the 16th floor

1 answer:

nekit [7.7K]3 years ago

6 0

I think 3 minute and 30 seconds

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spin [16.1K]

$\sin 45=\dfrac{y}{11\sqrt6}\\
\dfrac{\sqrt2}{2}=\dfrac{y}{11\sqrt6}\\
2y=11\sqrt{12}\\
y=\dfrac{11\sqrt{12}}{2}\\\\
\tan 60=\dfrac{x}{y}\\
\tan 60=\dfrac{x}{\dfrac{11\sqrt{12}}{2}}\\
\sqrt3=\dfrac{2x}{11\sqrt{12}}\\
2x=11\sqrt{36}\\
2x=66\\
x=33 \Rightarrow D
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Aleksandr [31]

Answer:

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Step-by-step explanation:

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2 years ago

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