X= 2 so 1+2 +y = 9 so y is 6
7+1+1+6+2+2+9=28
The equation of the parabola is:
---------------------------
The <em>equation </em>of a parabola of vertex (h,k) and focus (0,f) is given by:
- Vertex at the origin means that .
- Focus (0,6) means that
Thus, the equation of the parabola is:
A similar problem is given at brainly.com/question/15165354
Answer:
D
Step-by-step explanation:
The starting term is a1.
That's the very first term.
a1 = - 10
The second term = -17 which means that you added - 7 to - 10.
So d must be - 7
The formula must be
an = a1 + (n - 1)*d
an = -10 + (n - 1)(-7)
You might wonder why it is n - 1. The reason is because the first term is already added on the right side. The -1 means that we have already included the first term.
We should try the formula out to see what it does. Let's find a4
a4 = -10 + (4 -1)*-7
a4 = -10 + 3(-7)
a4 = -10 - 21
a4 = - 31 which is what the question suggests.
ST = 2TW since W is the midpoint of ST. So:-
8x + 10 = 2(6x - 7)
8x + 10 = 12x - 14
24 = 4x
x = 6
Therefore SW = ST = 58 and TW = 29
The answer is B because it is at -4 then increases 4 so now it is 0 degrees .