skepticalskeppy14 skepticalskeppy14

26-05-2021
Mathematics

contestada

Find the value of x.

Find the value of x class=

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jimrgrant1 jimrgrant1

26-05-2021

Answer:

x = 4

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

(19x + 3)° is an exterior angle of the triangle, then

11x - 2 + 9x + 1 = 19x + 3

20x - 1 = 19x + 3 ( subtract 19x from both sides )

x - 1 = 3 ( add 1 to both sides )

x = 4

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