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rosijanka [135]
3 years ago
5

There are 20 students in Mark's homeroom class. Ten percent of the students in Mark's homeroom class are also in art class. He f

inds the number of students in his homeroom class who are also in art class like this:
Explain Mark's error. Then find the correct solution to the problem. Show your work. (please answer)

Mathematics
1 answer:
Westkost [7]3 years ago
7 0
Well if 10% are in his art class, multiply by 0.1
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Answer:

We conclude that:

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The angles ∠A and ∠C are opposite angles.

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The angles ∠B and ∠D are opposite angles.

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<u>Determining the measure of angles of a parallelogram:</u>

As

∠A = 79°

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m∠C = 79°

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As ∠A and ∠D are consecutive angles, so

∠A + ∠D = 180°

substituting ∠A = 79° in the equation

79° + ∠D = 180°

subtracting 79° from both sides

79° + ∠D - 79° = 180° - 79°

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Thus, the measure of the angle D is:

m∠D = 101°

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m∠B = 101°

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m∠B = 101°

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