Question

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Answer 1

Answer:

The value of y in the figure is 28° [0ptionA].

Step-by-step explanation:

On the line AOB, at O :

➟ 40° + 3y + 2y = 180°

➟ 40° + 5y = 180°

➟ 5y = 180° – 40°

➟ 5y = 140°

➟ y = 140°/5

➟ y = 28°

•°• The value of y is 28° [0ptionA].

Substituting the value of y and knowing the angles :

➟ 3y : 3 × 28° = 84°

➟ 2y : 2 × 28° = 56°

•°• The angles are 84° and 56° respectively.

Answer 2

Answer:

The angle formed is 180 so

40+3y+2y=180

40+5y=180

Now we will take 40 beside 180 so the sign will change to {-}

So -

5y=180-40

5y=140

now as 5 and y are in multiplication when 5 will go to right side its sign will change into divide so

y= 140

      5

so the answer will be 28

A option is the correct answer