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What is the value of x given the following image?

What is the value of x given the following image?-example-1
User Sugarel
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The angle we are given, as a whole, is a right angle. That means angles CDF and FDE are complementary, or add up to 90 degrees.

CDF + FDE = 90

2x + (x + 9) = 90

3x + 9 = 90

3x = 81

x = 27

Answer: x = 27

Hope this helps!

User MsNichols
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