Answer:
<em>f=-14.4</em>
Step-by-step explanation:

Answer:
2x-8
Step-by-step explanation:
From the question the meaning of the expression is
Let the number be x
2x - 8
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Answer:
90
Step-by-step explanation:
In the quadrilateral formed by two tangents and the associated radii, the central angle and the external angle are supplementary. Here, that means that x° is supplementary to itself, so must be 90°.
x = 90