I think the common denominator is 90. 8,9,and 10 can all go into 90.
Answer:
I think thats right
Step-by-step explanation:
The vertex of the parabola is between the shortest line connecting its focus and directrix, so between (0, -4) and y = 4 is the point (0, 0), which is the vertex of the parabola. Also, this parabola faces downward.
The general formula for a parabola that faces downward is y = -4cx^2, where c is the distance from the vertex to either to focus or the parabola. Since c = 4, the equation is y = -16x^2, which is choice A.
Answer:
6
Step-by-step explanation:
See image below:)
