Question

given triangle xyz, what is a?

Explanation:

Step1: Use the linear - pair property

Two angles that form a linear pair are supplementary. That is, if two angles form a linear pair, then \(a + 75=180\).

Step2: Solve for \(a\)

Subtract 75 from both sides of the equation \(a + 75=180\).

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Answer:

\(105\)