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Please help me find the value of x.

Please help me find the value of x.-example-1
User Ambika
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1 Answer

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Explanation:

The last interior angle of the triangle is 180 - 30 - 20 = 130 gegrees

3x + 5 and this 130 degree angle are supplementary ....they form a straight line = 180 degrees

3x+ 5 + 130 = 180

3x = 45

x = 15 ( obviously the triangle is NOT to scale !)

User Barrymc
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