Answer:
Step-by-step explanation:
I had this question last year I believe it's C but not 100% s<u>ure.</u><span />
Answer:
Step-by-step explanation:
This is a positive parabola so it opens upwards. The equation for the directrix of this parabola is y = k - p. k is the second number in the vertex of the parabola which is (0, 0), but we need to solve for p.
The form that the parabola is currently in is
so that means that
. We can use that to solve for p in the formula
so
which simplifies to
which gives us that
p = 2. Now to find the directrix:
y = k - p becomes
y = 0 - 2 so
y = -2, choice A.
<span>ًWe should use the compass at one endpoint of line segment.
</span><span>Adjusting the compass to slightly longer than half the line length
</span><span>Drawing arcs above and below the segment line.
</span>Keeping the same compass width, draw arcs from other endpoint connecting the arcs cross, and draw the line segment.The inter section between the two lines represents the mid point of the line segment.
Therefore the correct answer is option C
<span>C Use the compass to copy the line segment on two arcs at equal distance from the endpoints if the segment</span>
C. 7.5
3/4 = .75
7.5/10 = .75