- Math in trigonometry question?

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Mars once had a magnet field, and was similar to earth now it's atmosphere is stripped away, is this an outcome for earth as well? How does earth science relate to environmental science? Convert y=-x to polar form.? Factor completely 54x^2 – 87x + 35 and EXPLAIN carefully with words? Determine whether the equation defines y as a function of x. y^2=3-x^2?