What is the equation of a parabola with a focus of (8,2) and a directrix of x=6?
1. 4(x-7)=(y-2)²
2. 4(x+7)=(y+2)²
3. 4(x-2)=(y-7)²
4. 4(x+2)=(y+7)²
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At which value in the domain does f(x) =0?

The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have