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Which simplified fraction is equal to 0. 53?

Why do we always see the same side of the moon? 1. the moon rotates at the same speed as the earth rotates. 2. the moon revolves around the earth at the same rate the earth rotates on its axis. 3. the moon rotates on its axis at about the same speed as it revolves around the earth.

What's the critical error seen in the geocentric model of the solar system exhibited here