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Mathematics, 29.09.2020 01:01 slonzyy1682

The pH scale measures how acidic or basic a substance is. Normal drinking water needs to have a pH of less than 8.5 and greater than 6.5. Model the normal range of pH values of water, using a compound inequality. 6.5 < x < 8.5
6.5 > x > 8.5
6.5 ≤ x ≤ 8.5
6.5 ≥ x ≥ 8.5

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