We know this is an upside down parabola because the vertex is higher than the point. So it will have a negative leading coefficient or "a" value. We have this then as our standard form:
where h and k are the coordinates of the vertex and x and y are the coordinates of the point. We will fill in our standard equation with those values and solve for a, then rewrite. Here's what we have so far:
. Simplifying that will give us -9=a(81)+6. Subtract 6 from both sides and we solve to find that a=-5/27. See, that's how we know it's upside down. Our a value is solved as a negative. Now, put that value of a back in along with the vertex to get a final equation of
Secant theta = hypotenuse/ adjacent
We have to calculate the adjacent side
adj^2 = 26^2 - 24^2
adj^2 = 676 -576
adj^2 = 100
adjacent = 10
secant theta = hypotenuse/ adjacent
secant theta = 26/10
secant theta = 13/5
The answer would be B. 2.27 ft^2
Using the area of a circle formula (a=3.14*.85^2)
Answer:
9sin (3)and f,(0)=4,AND f(0)=2
Answer:
D
Step-by-step explanation:
Plug the coordinate into each one and see which is solved.