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EastWind [94]
2 years ago
8

Write 12/root2 + root18 in the form broot2 where b is an interger

Mathematics
1 answer:
katrin2010 [14]2 years ago
5 0

\dfrac{12}{\sqrt 2} + \sqrt{18}\\\\\\=\dfrac{12 + \sqrt{18 \times 2}}{\sqrt 2}\\\\\\=\dfrac{12+\sqrt{9 \times 4}}{\sqrt 2}\\\\\\=\dfrac{12+3 \times 2}{\sqrt 2}\\\\\\=\dfrac{18}{\sqrt 2}\\\\\\=\dfrac{18\sqrt 2}{\left(\sqrt 2\right)^2}\\\\\\=\dfrac{18\sqrt 2}2\\\\\\=9\sqrt 2

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Answer:

<u>12 ways</u>

Step-by-step explanation:

The different ways to choose which three hamsters to put in the red cage.

At first , she must choose one of the two of the hamsters, Felix and Oscar, because they do not get along and cannot be in the same cage.

So, the number of ways to choose one of them = 2

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So, the total number of ways = 2 * 6 = 12

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Step-by-step explanation:

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