3 years ago

Find the value of x in the following proportion:

Mathematics

1 answer:

prisoha [69]3 years ago

6 0

Answer:

Step-by-step explanation:

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Let 2004-02-01-02-00_files/i0200000.jpg. If 2004-02-01-02-00_files/i0200001.jpg is a complement of 2004-02-01-02-00_files/i02000

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Answer: The answer is (C) 180°.

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Since ∠B is a complement of ∠A, so we have

$m\angle A+m\angle B=90^\circ\\\\\Rightarrow m\angle B=90^\circ-m\angle A=90^\circ-40^\circ\\\\\Rightarrow m\angle B=50^\circ.$

Now, since ∠C is a supplement of ∠B, so we have

$m\angle B+m\angle C=180^\circ\\\\\Rightarrow m\angle C=180^\circ-m\angle B=180^\circ-50^\circ\\\\\Rightarrow m\angle C=130^\circ.$

Therefore,

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Thus, (C) is the correct answer.

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Answer:

AB=12

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Step-by-step explanation:

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