Question

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Answer 1

Answer:

Q7 (1) Given x = 25° and 3x = 75°

we know that angle AOC , angle BOC are linear pairs of angles

Therefore :

angle AOC + angle BOC = 180°

(2y + 5)° + 3x° = 180°

2y + 5 + 75 = 180 [ 3x° = 75° ]

2y + 80 = 180

2y = 180 - 80

y = 100/2

y = 50°