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Can anyone explain to me how to solve for this?

Can anyone explain to me how to solve for this?-example-1

1 Answer

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Answer:

x = 11

Explanation:

The angle formed by two secants is half the difference of the intercepted arc angles.

m∠D = ½ (mBS − mCE)

60 = ½ (173 − (5x − 2))

120 = 173 − 5x + 2

5x = 55

x = 11

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