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Sound waves require a medium (solid, liquid, or gas) to travel through as they are mechanical waves. In a vacuum, where there are no particles to transmit vibrations, sound cannot propagate.
(23.99)2– (17.99)2+ (1378.88 + 44.88) ÷ ? = 607.998
8.992 + (5.01 × 4.98) + ? = 224.03
14.12 × 21.98 + 25.22% of 195.99 = ? × 50.9
? = 49.99² ÷ (1.98⁵ + 8.01 × 89.91) + 75.15% of (263.89 × 49.11)
10.10% of 999.99 + 14.14 × 21.21 - 250.25 = ?
960.11 ÷ 23.98 × 5.14 – 177.9 = √?
? = 65.78² ÷ (5.01⁵ + 7.02 × 33.33) + 33.33% of (290.88 × 23.09)
? = 49.97% of 38.09% of 1998.95
