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sergeinik [125]
2 years ago
8

Find the value of x in the following quadrilateral.

Mathematics
2 answers:
Eduardwww [97]2 years ago
7 0

Answer:

see below

Step-by-step explanation:

Because the sum of all angles in a quadrilateral is 360° we have:

90 + 101 + 12x + 3 + 9x - 2 = 360

21x + 192 = 360

21x = 168

x = 8°

Dmitrij [34]2 years ago
7 0

Answer:

The value of x is 8.

Step-by-step explanation:

Given that total angles in a quadrilateral is 360°. So in order to find x, you have to add up all the angles together to make it equals to 360° :

101 + 12x + 3 + 9x - 2 + 90 = 180

192 + 21x = 360

21x = 360 - 192

21x = 168

x = 168 \div 21

x = 8

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