Answer:
(D)On a coordinate plane, a parabola opens up with x-intercepts at (negative 2, 0) and (2, 0), and a y-intercept at the vertex (0, negative 4).
Step-by-step explanation:
For a parabola
to have a minimum vertex, it must open upward. (a>0).
In the given options, the parabola which opens upward is option D.
On a coordinate plane, a parabola opens up with x-intercepts at (negative 2, 0) and (2, 0), and a y-intercept at the vertex (0, negative 4).
Therefore, it has a minimum vertex with coordinates (0,-4).
Answer: He rides for 2.5 hours or 2 and a half hours.
Step-by-step explanation:
He needs to complete a trajectory of 22.5 kilometers.
He rides 9 kilometers per hour.
Divide the total by the amount of kilometers that he rides.
![\frac{22.5}{9}=2.5h](https://tex.z-dn.net/?f=%5Cfrac%7B22.5%7D%7B9%7D%3D2.5h)
Answer:
Step-by-step explanation:
[{((7^2)+1)-5}*3]
=[{(49+1)-5}*3]
=[{50-5}*3]
=[45*3]
=135
Answer:
Null Hypothesis and it assumes the equality of attributes.
The attribute of study is the proportion
≤ ![P_{2010}](https://tex.z-dn.net/?f=P_%7B2010%7D)
Step-by-step explanation:
Answer:
Yes they are equivalent, both equations equals ![15d+20](https://tex.z-dn.net/?f=15d%2B20)
Step-by-step explanation:
We first simplify Olivia's equation
![6d + 8 + 9d + 12](https://tex.z-dn.net/?f=6d%20%2B%208%20%2B%209d%20%2B%2012)
1. we combine like terms in the equation: ![6d + 8 + 9d + 12](https://tex.z-dn.net/?f=6d%20%2B%208%20%2B%209d%20%2B%2012)
![6d+9d](https://tex.z-dn.net/?f=6d%2B9d)
![8+12](https://tex.z-dn.net/?f=8%2B12)
![15d+20](https://tex.z-dn.net/?f=15d%2B20)
Now we simplify Isabella's
![5(3d + 4)](https://tex.z-dn.net/?f=5%283d%20%2B%204%29)
1. we do distributive property
![5*3d](https://tex.z-dn.net/?f=5%2A3d)
![5*4](https://tex.z-dn.net/?f=5%2A4)
![15d+20](https://tex.z-dn.net/?f=15d%2B20)
If you have any quesitons feel free to ask