Use rectangle DEFG for questions 9-12. 9. If DF = 2x +9 and GE = 3x -2, then x = E 10. If mZ1 = 25°, then mZ3 = 11. If m2 = 64°, then m/1= 12. If mZ1 = (7x-6)° and mZ3 = (3x- 4)°, then x = %3D 2) 3. 1.

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A: Note :  1. Corresponding angles are equal. 2. Alternate exterior angles are equal.

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.