Answer:
$10.17
Step-by-step explanation:
9 x .13 = 1.17
9 + 1.17 = 10.17
Rewrite in standard form and use the form to find the vertex.
(1, 5)
(x - 1)^2 + 5
Answer:
![Velocity = 70mph](https://tex.z-dn.net/?f=Velocity%20%3D%20%2070mph)
Step-by-step explanation:
Given
![Train = 50mph](https://tex.z-dn.net/?f=Train%20%3D%2050mph)
![Ball = 20mph](https://tex.z-dn.net/?f=Ball%20%3D%2020mph)
Required
How fast is the ball seem to be moving?
This question illustrates relative velocity;
Since the ball and the train moves in the same direction, the required velocity relative to the person standing behind is:
![Velocity = Train + Ball](https://tex.z-dn.net/?f=Velocity%20%3D%20%20Train%20%2B%20Ball)
i.e. we add both velocities
![Velocity = 50mph + 20mph](https://tex.z-dn.net/?f=Velocity%20%3D%20%2050mph%20%2B%2020mph)
![Velocity = 70mph](https://tex.z-dn.net/?f=Velocity%20%3D%20%2070mph)
Multiply .30 and 50 ... which is 15