fannyrivera321
07.03.2020 •
Chemistry
Swimming pools must have a certain amount of chlorine content. The United States standard for safe levels of chlorine in swimming pools is at least part per million and no greater than parts per million. Write a compound inequality for the acceptable range of chlorine levels.
Let =chlorine level in a swimming pool (in parts per million) ≤≤
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Ответ:
its B
Step-by-step explanation:
i did the test and got 100%