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Find the value of x please .

Find the value of x please .-example-1
User Dong Chen
by
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2 Answers

1 vote

Answer:

21 is the correct answer

180°(sum of the angles in a triangle)-40°=140°

if x is 21°, 5x+14° would be 119°

119°+21°=140°

User Jmihalicza
by
7.7k points
2 votes

Answer:

The correct answer is A. 21

Explanation:

Let's recall that the interior angles of a triangle add up to 180°, therefore, we have this equation:

40 + x + 5x + 14 = 180

6x = 180 - 14 - 40

6x = 126

x = 126/6

x = 21

The correct answer is A. 21

The angles of the triangle are: 40°, 21° and 119°

User Soydachi
by
7.6k points

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