Answer:
![y = x^2 - 8x + 38](https://tex.z-dn.net/?f=y%20%3D%20x%5E2%20-%208x%20%2B%2038)
Step-by-step explanation:
Hello!
The standard form of a quadratic is
.
To convert the vertex form to standard form, we have to expand the parenthesis and add the constant.
Convert:
The standard form is ![y = x^2 - 8x + 38](https://tex.z-dn.net/?f=y%20%3D%20x%5E2%20-%208x%20%2B%2038)
If you think about it, the ratio of 5:2, is basically saying that for every 7 people you have, 5 will be children, and 2 will be adults, or 5/7 : 2/7. So you can set it up as a proportion. If you are looking for the number of children (5 for every 7), you could as 5/7 = x/63000. If you did cross-multiplication (5*63000 = 7*x), you would get that 7x = 315000. If you them divide both sides by 7 to get the variable by itself, you would get that x is equal to 45000. This means that out of the 63000 people in the park, 45000 of them are kids.
Answer:
B) -7
Step-by-step explanation:
x+y
8+(-15)=8-15=-7
Step-by-step explanation:
1450=2x+15
2x=1435
x=717.5
Answer:
do 10.5 - 1.5 and that will give you 9.