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Given that 81 0.4 = x, 81 0.78 = y and x z = y 2 , then the value of z is:
4.9
3.9
2.9
1.9
9
Practice and solve "Given that 81 0.4 = x, 81 0.78 = y and x z = y 2 , then the value of z is:..." for Mathematics - Previous Year Paper 2026. The correct answer is Option A: 9. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Practice and solve "Given that 81 0.4 = x, 81 0.78 = y and x z = y 2 , then the value of z is:..." for Mathematics - Previous Year Paper 2026. The correct answer is Option A: 9. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.