Mathematics, 03.06.2021 14:00 annikafischer

If a comet has a perihelion of 1.0 AU and an aphelion of 9.9 AU, what is the semi-major axis of the comet's orbit? Express the answer using two significant figures. axis is what Au?

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If a comet has a perihelion of 1.0 AU and an aphelion of 9.9 AU, what is the semi-major axis of the...