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Natasha_Volkova [10]
3 years ago
14

Help pleaseeee this is a final exam​

Mathematics
1 answer:
Mandarinka [93]3 years ago
4 0

Answer:

3x +89 + 8x + 58 =180 (they are supplementary angles, so added together they are equal to 180)

11x + 147= 180 (combine like terms on the left side of the = sign)

11x= 33 (subtract 147 from both sides and then divide by 11 to isolate x)

x= 3  (this is x)

3x +89 (this is the measure of angle MON, plug in x and solve)

3(3)+89

9+89

98 degrees (this is your answer)

Step-by-step explanation:

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