Answer:
Step-by-step explanation:
The directrix is a vertical line, so the parabola is horizontal. The focus lies to the left of the directrix, so the parabola opens to the left.
For a left-opening parabola:
x = a(y-k)²+h,
a < 0,
vertex (h,k)
focal length p = 1/|4a|
focus (h-p, k)
directrix: x=h+p
Apply your data
focus (1,-4)
directrix x=2
vertex (1.5,-4).
focal length p = 0.5
a = -1/|4p| = -½
x = -½(y-2)²+ ½
Answer:
10350.98
Step-by-step explanation:
Answer:
10 pillowcases
Step-by-step explanation:
Your answer would be 13,122
You would multiply by -3 each time for this particular sequence.
Hope I helped!
Let June's age be
Then his father is
The sum of their ages is no less than 77 means,
The youngest age June can be is 11
