3 years ago

In a class of 30, five were absent. What fraction of the class was absent?

Mathematics

1 answer:

kipiarov [429]3 years ago

3 0

5/30 were absent or 1/6 simplifying or dividing both by 5 we have: 1/6

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3 years ago

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3 years ago

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3 years ago

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Ivahew [28]

Check the picture below.

$\bf \textit{Law of Cosines}\\ \quad \\
c^2 = {{ a}}^2+{{ b}}^2-(2{{ a}}{{ b}})cos(C)\implies 
c = \sqrt{{{ a}}^2+{{ b}}^2-(2{{ a}}{{ b}})cos(C)}
\\\\\\
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-------------------------------\\\\
\begin{cases}
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3 years ago