Answer:

Step-by-step explanation:
The directrix y=-6 is parallel to the x axes, so parabola has equation of the form

where
is the vertex of parabola and p is parabola's parameter.
By the definition,
is the distance from the vertex to the directrix, so

Hence, the equation of parabola is

See attached diagram for the graph of parabola and its directrix.
In vertex form this equation is

Answer:
Step-by-step explanation:
X^4+x=0
X(X^3+1)=0
X(X+1)(x^2-x+1)=0
X=0, x=-1, x=(1+3^1/2i)x=(1-3^1/2i)
Answer:
<u>6</u>
10
=<u>3</u>
5
Step-by-step explanation:
3/5 you just need to divide
You would need to shade 1.5 boxes or 6 pieces to have shaded 25% of the shape.
In total, there are 6 boxes. There are 4 pieces per box. In total, there are 24 pieces.
6/4 = 1.5
24/4 = 6
You would need to shade 1.5 boxes, which is equal to 6 pieces or triangles.
Answer:

Step-by-step explanation:
We want to evaluate

We use special angles or the unit circle to obtain;

This implies that;


