Question

4 Questions Attached with options, Class 9 Case Study Answer please

Answer 1

Answer:

Answer of 46 is

105

Step-by-step explanation:

x+75=180

x=180-75=105

x=105

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Answer 2

Answer:

46. (b), 47. (a), 48. (c), 49. (c)

Step-by-step explanation:

46.

x+75 = 180 (Linear pair)

x = 180-75

x = 105 degrees

47.

a+a+64 = 180 (Linear pair) (OQ is bisector so QOY = QOZ = a)

2a+64=180

2a = 180-64 = 116

a = 116/2

a = 58 degrees

48.

5x + 4x = 180

9x = 180

x = 20 degrees

49.

a = 80 + b (Given)

a+b = 180 (Linear pair)

80+b+b = 180 (Putting 80+b in place of a)

2b = 100

b = 50 degrees

a = 80 + b = 80+50 = 130 degrees

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