b. minimum (1,8)
c. maximum (-1,3)
d. minimum (-1,3)
Answer : d. minimum (-1,3)
The vertex form of quadratic function is
, where (h,k) is the vertex
To get vertex form we apply completing the square method
To apply completing the square method , there should be only x^2
So we factor out 5 from from first two terms
Now we take the number before x (coefficient of x) and divide by 2
=1
Now square it
Add and subtract 1 inside the parenthesis
Now we take out -1 by multiplying 5
Now we factor x^2 +2x+1 as (x+1)(x+1)
h=-1 and k=3
So vertex is (-1,3)
When the value of 'a' is negative , then it is a maximum
When the value of 'a' is positive , then it is a minimum
is in the form of
The value of a is 5
5 is positive so it is a minimum
f(x) is minimum at point (-1,3)
Answer:
Step-by-step explanation:
An average family of four (also living in Phoenix, AZ) uses 325,851÷365 gallons of water per day
then
An average family of four (also living in Phoenix, AZ) uses 892.74247 gallons of water per day
therefore
the number of families of four can one golf course provide water for :
80 000 000÷892.74247=89611.509
the number of families of four can one golf course provide water for :
[rounded to the nearest ten] 89610.
:)
Answer:
Step-by-step explanation:
Givens
This situation can be described by the following equation
Where indicates the number of families that could use the 80 million galons of water.
Let's solve for
Therefore, around 250 families can be provided with one golf course.
Answer:$21.79
Step-by-step explanation:
If the original cost is 18.47 and you want to tip 18% tip the tip you would tip is 3.32 and if you add that to 18.47 you will get 21.79