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15-04-2019
Mathematics

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Аноним Аноним

15-04-2019

Answer:

x = 26°

Step-by-step explanation:

Since ∡QOS is a right angle then;

∡QOR + ∡ROS = 90°

(x + 5) + (2x + 7) = 90°

3x + 12 = 90°

3x = 90 - 12 = 78°

3x = 78°

x = 78 ÷ 3 = 26°

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