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Question

Use the figure alongside to find the value of y in terms of x.

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A
y=3x+35
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B
y=x+45
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C
y=x45
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D
y=x3+353
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Solution

The correct option is A y=3x+35
We know, external angle = sum of internal opposite angles.
Hence, 2yx=y5+2x+40
y=3x+35

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