For C = 0, F = (9/5)(0) + 32 = 32°F. For F = 0, 0 = (9/5)C + 32, giving C = −32 × (5/9) = −160/9 ≈ −17.78°C. Ganita Manjari Part 2 Class 9 Maths chapter 13 question answer
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