Answer:
To find < E we use tan
tan E = opposite / adjacent
DF is the opposite
EF is the adjacent
DF = 11
EF = 11
tan E = 11/11
tan E = 1
E = 45
Hope this helps
( n + 7 ) x 3
Hope it is right
Answer:
0.14285714285
Hope this helps :)
Step-by-step explanation:
Hey there Kia!
![\left[\begin{array}{ccc}40/2=20 \ ; \ 19/2=9.5\end{array}\right]](https://tex.z-dn.net/?f=%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D40%2F2%3D20%20%5C%20%3B%20%5C%2019%2F2%3D9.5%5Cend%7Barray%7D%5Cright%5D%20)
Your answer should look like the following.
![\left[\begin{array}{ccc} \frac{19}{20y}= \frac{9.5}{40y^3} \end{array}\right]](https://tex.z-dn.net/?f=%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D%20%5Cfrac%7B19%7D%7B20y%7D%3D%20%5Cfrac%7B9.5%7D%7B40y%5E3%7D%20%20%5Cend%7Barray%7D%5Cright%5D%20)
Hope this helps you!
Standard form is, hold a sec
x=2 is directix
that means it opens left or right
so we must use
(y-k)²=4p(x-h)
where vertex is (h,k) and p is distance from focus to vertex
also shortest distance from vertex to directix
the shortest distance from focus to directix is 2p
if p>0 then the parabola opens right
if p<0 then pareabola opens left
so
(-2,0) and x=2
the distance is 4
4/2=2
p=2
wait, positive or negative
focus is to the left of the directix so p is negative
p=-2
vertex is 2 to the right of the focus and 2 to the left of directix
vertex is (0,0)
so
(y-0)²=4(-2)(x-0) or
y²=-8x is da equation
not sure what form is standard tho
