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melamori03 [73]
2 years ago
11

Question 3 help me please

Mathematics
2 answers:
Vika [28.1K]2 years ago
7 0

Answer:

The answer is x=13

crimeas [40]2 years ago
5 0

Answer:

3x+(4x-1)+90°=180°{sum of angles in a triangle}

3x+4x-1+90°=180°

7x+89°=180°

7x=180°-89°

7x=91°

divide both sides by 7

x=13

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