A parabola can be represented by the equation y2 = –x. What are the coordinates of the focus and the equation of the directrix?

focus: (negative one-fourth, 0); directrix: x = One-fourth
focus: (one-fourth, 0); directrix: x = Negative one-fourth
focus: (–4,0); directrix: x = 4
focus: (4,0); directrix: x = –4

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

Use the distributive law to multiply. 3(4x + 5y + 6)

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?