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adelina 88 [10]
2 years ago
5

I need help with this, I don’t understand how to do this

Mathematics
2 answers:
DanielleElmas [232]2 years ago
5 0

Answer:

76 because the angles must add up to 360

ladessa [460]2 years ago
5 0

Answer:

x = 76

Step-by-step explanation:

All angles must add up to 360 degrees. So, we add the angles we already have.

104 + 123 + 57 + x= 360 we will solve for x

284 + x = 360  add all known values on the left

x = 76 we subtract 284 from both sides to isolate x

To check our answer, we add all values

104 + 123 + 57 + (76) = 360 This is correct. :)

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