Point r moves so that its distance from point (1,2) is two times the distance from x-intercept. find the equation of locus r.
the answer is
x^2 - 2x - 3y^2 - 4y + 5 = 0

Acommunity group sells 2,000 tickets for its raffle. the grand prize is a car. neil and 9 of his friends buy 10 tickets each. when the winning ticket number is announced, it is found to belong to neil's group. given this information, what is the probability that the ticket belongs to neil? a.1/5 b.1/10 c.1/200 d.1/4

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

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