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Answer:
(B) 6.82 times 10 Superscript 12
Step-by-step explanation:
I just took the quiz
Answer:
<em>343 metres per second
</em>
<em>In dry air at 20 °C (68 °F), the speed of sound is 343 metres per second (about 767 mph, 1234 km/h or 1,125 ft/s).</em>
<em></em>
C is 23 because if you get all rhe numbers and measure thats your answer. I think i might be wrong. if I am then sorry