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3 years ago

Solve for the missing side of the triangle.

Mathematics

1 answer:

SVEN [57.7K]3 years ago

8 0

Answer:

19.209372712298546 (C)

Step-by-step explanation:

For this you use pythagorean theorem. a squared + b squared = c squared which is your missing side. 15 squared is 225 and 12 squared is 144 so together thats 369. Now we know c squared is 369 so we find the square root of that and boom. So your answer is C (19.2)

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Reasons:

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The number of ways of selecting pairs (two boys) of boys from a group of

four is given using combination formula as follows;

$_nC_r = \dfrac{n!}{r! \cdot (n - r)!}$

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Therefore, the weights of the pairs are;

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c + d = Lost weight

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Therefore;

The lost weight, c + d = 230 - (a + b)

Which gives;

c + d = 230 - (110) = 120

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The lost weight = 120 kg

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