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Tasya [4]
3 years ago
14

Please answer this ( 8th grade math )

Mathematics
2 answers:
Alja [10]3 years ago
7 0
It is C because
31-71=102
And then 180=triangle
180-102=78
Andre45 [30]3 years ago
7 0

Answer:

The correct answer is C

Step-by-step explanation:

Helpful fact- All triangles are 180 degrees

Angle 1 = 31 degrees

Angle 2= 71 degrees

X= Angle 3

Y = Angle 1&2 Sum

So by adding Angles 1 & 2 we get a sum  to subtract from 180 and get a difference. That difference will be Angle 3.

Angle 1 + Angle 2 = Y

180 - Y= X

31 + 71 = 102 degrees   Y= 102 degrees

180 - 102 = 78 degrees  X= 78 degrees

PLS GIVE BRAINLIST IF HELPFUL

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