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just olya [345]
3 years ago
5

The figure below shows two parallel lines intersected by a third line. What is the value of x

Mathematics
2 answers:
Alina [70]3 years ago
6 0

..Its ...13 º .......

lisabon 2012 [21]3 years ago
4 0

Answer:

x = 20

Step-by-step explanation:

The two angles given in the diagram are alternate interior angles. Alternate interior angles are congruent. Therefore:

(4x)° = (x + 60)°

Use the equation to solve for the value of x

4x = x + 60

Subtract x from both sides

4x - x = x + 60 - x

3x = 60

Divide both sides by 3

\frac{3x}{3} = \frac{60}{3}

x = 20

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