John rode 3150 m at an average speed of 350 m/min. if he had ridden at average of 375 m/min instead. how much sooner would it have taken? (in seconds)

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl

answerca air mass;