4. Subtract: 8-4 1/2.
O A. 4 1/2
O B. 3
O C. 3 1/2
O D. 4...
Answers: 2
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If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).
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Which term describes the point where the perpendicular bisectors of the three sides of a triangle intersect?
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