I waited here one minute and no attachment.
I see y = 3x^2 - 2. If that is the case, there is no movement indicated in the x direction at all, only the y direction. If there was movement along the x axis, there would be a number inside a set of () with the x, like this: (x-3)^2. But that is not there in your case, so the x coordinate of the vertex stays right where it starts, at the origin, or x = 0. The "minus 2" indicates y movement: down 2 units. So the vertex sits at (0, -2). The axis of symmetry is the same as what the x coordinate is, but in equation form. So the axis of symmetry has an equation of x = 0.
I can show you one way. Since 25x4=100 we can start by dividing 80/4. Which gives you 20.
Answer:
Probability that A wins is 2/3.
Step-by-step explanation:
player A can win in 2 ways
1) Player A wins immediately by getting head
2) Player A loses immediately by getting tail but wins ultimately as player B gets losses.
a) Probability of 1 to happen is 1/2.
b) Similarly for the event 2 to happen the condition is that A get's a tail and B losses.
Let probability that A wins is 'p' thus we have
![p=P(1)+P(2)\\\\p=\frac{1}{2}+\frac{1}{2}\times (1-p)\\\\](https://tex.z-dn.net/?f=p%3DP%281%29%2BP%282%29%5C%5C%5C%5Cp%3D%5Cfrac%7B1%7D%7B2%7D%2B%5Cfrac%7B1%7D%7B2%7D%5Ctimes%20%281-p%29%5C%5C%5C%5C)
Solving for 'p' we get
p= 2/3.