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IgorLugansk [536]
2 years ago
5

Find the measure of MNI. please help! i’ll give you brainlist!

Mathematics
2 answers:
Mice21 [21]2 years ago
7 0
135 degrees the two equations in the the triangle are equal to the angle you need to find
Sonbull [250]2 years ago
5 0

Answer:

m\angle MNI = 135^{\circ}

Step by step explanation:

\text{The exterior angle of a triangle =  sum of two opposite interior angles.}

~~~~~~\angle MNI = \angle LMN  + \angle MLN\\\\\implies 19x+2=(15x-12)+6x\\\\\implies 19x +2 = 21x-12\\\\\implies 21x -19x = 12+2\\\\\implies 2x = 14\\\\\implies x=\dfrac {14}2\\\\\implies x = 7\\\\\text{So,}~ m\angle MNI = 19(7)+2=135^{\circ}

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