Answer:
it is 5.9 A
Step-by-step explanation:
The equation of a parabola is given. y=
Here the value of 'a' = 18 and it is positive, it means the parabola opens up.
For vertical parabola the focus point is (h , k+p)
Where (h,k) is the vertex and p = (p is the distance between vertex and focus)
First we find vertex (h,k)
h =
a = 18 and b = 4
So h= = =
Plug in -1/9 for x and find out k
k =
=
=
So vertex is (, )
P = , we know a= 18
So p = =
Focus is ( h, k +p)
h = k =
and p =
k + P = +
Take common denominator 72
k + p = + = =
Focus point is ( , )
It should be A.. its the only choice where i see -1
Answer:
Option B is correct - this experiment has one factor (shampoo type), blocked by gender and whether the hair is dyed.
Step-by-step explanation:
The researcher desires to compare the effect of a new type of shampoo, he also has the opinion that men and women may react to the shampoo differently.
Furthermore, he believes that the shampoo will react differently to the hair that is dyed.
Therefore, this experiment has one factor(shampoo-type), blocked by gender and whether the hair is dyed.
Hence, option B is the correct option.
Step-by-step explanation:
4x-3y=-1
4x+y=11