Answer: =
60
x
y
+
290
x
−
102
y
−
493
8
x
+
1
Step-by-step explanation:
10
x
−
17
)
(
6
y
+
29
)
8
x
+
1
Answer:
(4×200)+(2×70)+(4×5)
Step-by-step explanation:
Answer:
25%
Step-by-step explanation:
Coin flip with tails: 1/2
1,2, or 3 on cube: 1/2
1/2*1/2 = 1/4
1/4 = 25%
For
(x-h)^2=4p(y-k)
vertex is (h,k)
distance from vertex to directix=p=distance from vertex to focus
|4p|=focal width
remember, focus is on the side of the parabola where it opens and directix is at the back
when p is negative, it opens down
when p is positive, it opens up
look at equation
-1/40(x-0)^2=(y-0)
times -40 to both sides
(x-0)^2=-40(y-0)
(x-0)^2=4(-10)(y-0)
vertex=(0,0)
p=-10,it's negative so it opens down
focus is 10 units below vertex (y direction)
focus=(0,-10)
diretix is 10 above
directix is y=10
focal width=|4p|=|4(-10)|=|-40|=40
vertex=(0,0)
focus=(0,-10)
directix is y=10
focal width=40 units
