mya4141 mya4141

19-04-2021
Mathematics

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PLEADE HELP ILL GIVE BRAINLIST QUESTION IN PHOTO

PLEADE HELP ILL GIVE BRAINLIST QUESTION IN PHOTO class=

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jimrgrant1 jimrgrant1

19-04-2021

Answer:

x = 3

Step-by-step explanation:

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

120° is an exterior angle of the triangle , then

15x + 5 + 22x + 4 = 120

37x + 9 = 120 ( subtract 9 from both sides )

37x = 111 ( divide both sides by 37 )

x = 3

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