We will use vertex form of the parabola:
Where (h,k) is the vertex of our parabola. We know that focus and directrix are located at the same distance from the vertex. That distance is a.
We can use this to build a system of equations to calculate a and k. We already know that h=-5, keep in mind that focus and vertex share the same x coordinate.
We just add these two equations together:
We plug this back into the first equation:
That's all the information we need to write down the equation:
None of the answers you provided are correct.
Answer:
Step-by-step explanation:
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Hey! To do this you have to do 0.03 x 800 to get 24. Good luck!
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An obtuse triangle has a obtuse angle that measures larger than 90 degrees.
You have to apply the Phytagorean Teorem, which is:
c^2 = a^2 + b^2
c=√(a^2 + b^2)
"c" is the hypotenuse.
"a" and "b" are the legs of the triangle (10 inches and 15 inches).
Let's substitute those values in the equation:
c=√(a^2 + b^2)
c=√(10^2 + 15^2)
c=√325
c=18 inches
What is the smallest possible whole-number length of the unknown side?
It is the next largest integer greater: 19 inches.
Well, we can just divide them.
0.89 / 12 is approximately $0.07
3.29 / 18 is approximately $0.18
0.18 - 0.07 = $0.11
So the cost of cereal in 2008 is 11 cents more per ounce than the cereal in 1984.