Answer:
Step-by-step explanation:
Standard form of a parabola with a vertical axis of symmetry:
If p > 0, the parabola opens upwards, and if p < 0, the parabola opens downwards.
From inspection of the graph:
- Vertex = (3, -1)
- Directrix = y = -3
Therefore:
Use the Directrix equation to find p
⇒ y = (k - p)
⇒ -3 = -1 - p
⇒ p = 2
Therefore the equation of the conic section is:
Rearranging in standard form 
:
Yes .12 is a rational number
Answer: Use employee identification numbers to randomly select 200 employees
Step-by-step explanation:
Random sampling refers to a sampling technique whereby each sample has an equal chance of being selected. It is an unbiased representation of the entire population and this is vital in drawing conclusion.
From the options given, the best way to randomly choose these 200 employees will be to use employee identification numbers to randomly select 200 employees.
9x= x+4
Subtract x on both sides to balance the equation.
8x= 4
Divide 8 into both sides. (the inverse of multiplication)
x= 1/2
We can check this by plugging in x.
9(.5)= .5+4
4.5= 4.5
I hope this helps!
~kaikers
The answer is d when you graph
