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Inequality that represents the lengths of the glass:
12 cm < x ≤ 12.2 cm
126 divided by 7 equals 18
18 m
They are both periodic functions that look like waves. They both have a period of 2pi and oscillate between 1 and -1.
Negative 3143 over 1000 divide -3.143 by 1000 and there’s your answer