Answer:
Step-by-step explanation:
Since we can't do it with just the vertex and directrix, we have to find the foci with the directrix and vertex. So it becomes (0,3). The equation for a parabola given the directrix and foci, is
where y = k is the directrix and (a,b) is the foci. Try deriving this yourself knowing the distance from the foci to a point on the parabola is the same as the distance from that same point to the directrix. Now, a = 0, b = 3, and k = -3, so plugging that in we get
Expanding and simplifying we get
The cost of the 7.5lbs of walnuts would be $2.16
Answer:
Option 1: {-7,5,18,24,32}
Step-by-step explanation:
Observing the number line we can see that the solution is
x≤18 and x>22
So we will check the options one by one
For {-7,5,18,24,32}
The number set satisfies the solution translated from the number line.
For {-9,7,15,22,26}
As this number set includes 22 which is not included in the solution so this option is not correct.
For {16,17,22,23,24}
This number set also includes 22 so the option is not correct.
For {18,19,20,21,22}
This number set includes 19,20,21,22 which is not a part of the solution. Therefore, this option is also not correct ..
Answer:
I mean okay
Step-by-step explanation:
The heck is this?
Answer:
6.4×107km³
Step-by-step explanation:
V=a^3=400^3=6.4×10^7km³