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OLga [1]
3 years ago
11

What is the value of X?

Mathematics
2 answers:
denis23 [38]3 years ago
5 0
45 as all angles in a triangle add up to 180. So equation is
180-(80+55)=x
Which solves to 45
alexandr402 [8]3 years ago
4 0

Answer:

x = 45

Step-by-step explanation:

The 3 angles of a triangle add up to 180

<a + <b + <c = 180

substitute what you know

55+ 80 + <c = 180

combine like terms

135 + <c = 180

subtract 135 from each side

<c = 180 -135

<c = 45

x = 45



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