Answer:
Mean: 36.5
Standard Deviation: 1.44
Step-by-step explanation:
I got it right on Khan.
Answer:
40176
Step-by-step explanation:
124 * 324 = 40176
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(x-h)^2=4p(y-k)
we know it is this one because the directix is y=something and not x=something
(h,k) is the vertex
p is the distance from the vertex to the focus
it is 1/2 the distance from the vertex to the directix
if p is positive, the focus is above the vertex
if p is negative, the focus is below the vertex
we have
focus is (6,2) and directix is y=1
distance from (6,2) to y=1 is the distance from 2 to 1 which is 1
1/2=p
since 1<2, we see that the focus is above the vertex (when the focus is greater than the directix, then the graph opens to the right or up)
p=1/2
1/2 below (6,2) is (6,1.5)
vertex is (6,1.5)
p=1/2
(x-6)^2=4(0.5)(y-1.5)
(x-6)^2=2(y-1.5)
(x-6)^2=2y-3
2y=(x-6)^2+3
divide both sides by 2
y=1/2 times (x-6)^2+3/2
f(x)=1/2 times (x-6)^2+3/2
2nd option is answer
your answer is C I'm definitely sure
The lion travels at 50x miles, x being the hours. The elephant is 25x.
50x = 200
25x = 200
x = 4 hours for the lion to finish.
x = 8 hours for the elephant to finish
according to this linear equation, there would have to be no race, or a race of 0 miles for them to finish the same. But obviously races of 0 miles dont exist, so there would not be a race.
