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4vir4ik [10]
3 years ago
6

What is the measure of ∠MNO?

Mathematics
2 answers:
Brrunno [24]3 years ago
6 0

Answer:

∠MNO = 51°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 given angles and equate to 180, that is

3x + 15 + 2x + 25 + 5x + 10 = 180 ← simplify left side

10x + 50 = 180 ( subtract 50 from both sides )

10x = 130 ( divide both sides by 10 )

x = 13

∠MNO = 2x + 25 = (2 × 13) + 25 = 26 + 25 = 51°

nlexa [21]3 years ago
4 0

∠MNO = 51 °

becausse

3 angles d'un triangle = 180 °

3x + 15 + 2x + 25 + 5x + 10 = 180

10x + 50 =

10x = 130

x = 13

∠MNO = 2x + 25 = (2 × 13) + 25 = 26 + 25 = 51 °

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