Let f(x) = ax ² + bx + c. Then
f '(x) = 2ax + b
f ''(x) = 2a
f (-3) = -18, so
9a - 3b + c = -18
f ' (-3) = 16, so
-6a + b = 16
f '' (-3) = -6, so
2a = -6
Then a = -3, b = -2, and c = 3, so that
f(x) = -3x ² - 2x + 3
The Rivertown city council is attempting to choose one of four sites (A, B, C, or D) as the location for its new emergency facility. After the new emergency facility becomes available for service, the current emergency facility will be shut down. The project manager has estimated the following response times in minutes from each of the proposed sites to the four areas that must be served by the emergency facility.
proposed-site Area-Served
1 2 3 4
A 5.2 4.4 3.6 6.5
B 6.0 7.4 3.4 4.0
C 5.8 5.9 5.9 5.8
D 4.3 4.8 6.5 5.1
The number of emergency runs from the current emergency facility to each of the four areas over the past year is as follows:
Area 1 2 3 4
Number-runs 150 65 175 92
Compute the weighted mean response time from the proposed locations and determine which proposed site should be selected for the new emergency facility.
a. site A
b. site B
c. site C
d. site D
Answer:
SITE A
Step-by-step explanation:
Given :
proposed-site Area-Served
1 2 3 4
A 5.2 4.4 3.6 6.5
B 6.0 7.4 3.4 4.0
C 5.8 5.9 5.9 5.8
D 4.3 4.8 6.5 5.1
Area 1 2 3 4
Number-runs 150 65 175 92
Computing the weighted average for the 4 sites :
Site A:
((150*5.2) + (65*4.4) + (175*3.6) + (92*6.5)) / (150 + 65 + 175 + 92)
= 2294 / 482
= 4.7593
Site B:
((150*6.0) + (65*7.4) + (175*3.4) + (92*4.0)) / (150 + 65 + 175 + 92)
= 2344/ 482
= 4.863
Site C:
((150*5.8) + (65*5.9) + (175*5.9) + (92*5.8)) / (150 + 65 + 175 + 92)
= 2819.6/ 482
= 5.850
Site D:
((150*4.3) + (65*4.8) + (175*6.5) + (92*5.1)) / (150 + 65 + 175 + 92)
= 2563.7/ 482
= 5.319
From the weighted average response time computed for the different sites ;
The best location for the emergency facility would be one with the least average response time; which is SITE A.
Need help on this please
how many feet are there in 23 yards? answer without units.
Answer:
69 :)
Step-by-step explanation:
Answer: 69 feet
Step-by-step explanation:
1 yard= 3 feet
Given
There are 23 yards
Calculate
23 yards × 3 feet/yard= 69 feet
Hope this helps!! :)
Please let me know if you have any questions
Eliminate the parameter in the equations x =t Superscript one-half and y = t – 4. How can the rectangular equation be described? cubic linear quartic quadratic
ANSWER: A
A function assigns values. The rectangular equation can be described as cubic.
What is a Function?A function assigns the value of each element of one set to the other specific element of another set.
As the function of x and y is given, therefore, if we eliminate t from both the function we will get,
[tex]x=t^{\frac12}\\\\x=\sqrt t\\\\x^2=t[/tex]
Now, substitute the value of t in the function of y,
[tex]y= t-4\\y=x^2-4[/tex]
Further, the rectangular equation can be written as,
[tex]\text{Rectangular Equation} = x \times y[/tex]
[tex]= x \times (x^2-4)\\\\= x^3-4x[/tex]
Thus, the rectangular equation can be described as cubic.
Learn more about Function:
https://brainly.com/question/5245372
Answer: a.) cubic
Step-by-step explanation:
What is the least common mutliple of 10 and 12?
Answer:
2
Step-by-step explanation:
You can divide both of them by 2
Hey there!
10: 10, 20, 30, 40, 50, 60, and etc.
12: 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144
Lowest Common Multiple (LCM) of BOTH of your given NUMBERS, is most likely: 60 ✅
Answer: 60 ☑️
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
Which expressions are polynomials? Select the two correct answers. (2 points)
ox-3+ ſo
3- +1
0-428
24 + 2y2 + 2 – w?
Answer:
Third and fourth
Step-by-step explanation:
Exponents can't be negative.
The temperature in Jukkasjarvi, Sweden, was -3 degrees at 3 P.M. After 6 hours, the temperature dropped to -15 degrees. The temperature dropped the same amount each hour. What was the change in temperature each hour?
Find the GCF of each set of numbers.
21, 30
Answer:
3
Step-by-step explanation:
3x7=21
3x10=30
Plss HELP I’LL GIVE BRAINLIEST!!!!!
A right rectangular prism is shown. The two dimensional net is also shown. Find the surface area of this prism.
A)
20 cm?
B)
36 cm2
C)
54 cm
D)
58 cm2
Answer:
the answer is D:)
Step-by-step explanation:
Which model can be used to represent the number below pls help
Please Help ❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗❗ I Will Give 20 Points
Answer:
Step-by-step explanation:
When x = -4, y = 2(-4)+2 = -6.
When x = -3, y = 2(-3)+2 = -4.
Fill in the other values of y the same way.
Answer:
(-4, -6)(-3, -4)(-2, -2)(-1, 0)(0, 2)(1, 4)(2, 6)Explanation:
y = 2x + 2
x: -4
y = 2(-4) + 2
y = -6
x: -3y = 2(-3) + 2
y = -4
x: -2y = 2(-2) + 2
y = -2
x: -1y = 2(-1) + 2
y = 0
x: 0y = 2(0) + 2
y = 2
x = 1y = 2(1) + 2
y = 4
x = 2y = 2(2) + 2
y = 6
See Image Below For Plotted Points
- PNW
If a number is decreased by 19 the result is -15 What is the number?
Answer:4
Step-by-step explanation:
I need help please. Thank you.
What's the slope of -x+2y=5
Answer:
Slope = (1/2)
Step-by-step explanation:
Rearrange the equation into the y = mx + b format.
-x + 2y = 5
2y = x + 5
y = (1/2)x + (5/2)
m represents slope, which is (1/2) in this question.
please help me please i really need help please
Answer:
Step-by-step explanation:
x + y = 1 -------------------(I)
5x + 3y = -3 -----------------(II)
Multiply (I) by (-5) -5x - 5y = -5
5x + 3y = -3 {Now add}
-2y = -8
y = -8/-2
y = 4
Plugin y = 4 in equation (I)
x + 4 = 1
x = 1 -4
x = -3
Solution: (-3, 4)
X-4=12 what does x equal
Answer:
x = 16
Step-by-step explanation:
So we do the fancy inverse thing:
x - 4 + 4 = 12 + 4
x = 16
The inequality x < 5 represents the possible values for x on a number line. Which is a possible value for x?
Answer: Anything less than 5.
Some examples are 4, 3, -6, -24
Lester's Cafe offers two kinds of espresso: single-shot and double-shot. Yesterday afternoon, the cafe sold 100 espressos in all, 40% of which were single-shot. How many single-shot espressos did the cafe sell?
Answer:
The cafe sold 40 single shot espressos.
Step-by-step explanation:
Hello, please help.
Find the value of x:
x^2 + 3x^3 - 2x + 9 = 24 + 54x + 92x^2 - 2x^3
Answer:
-91x² + 5x³ - 56x -15 = 0
Step-by-step explanation:
x² + 3x³ - 2x + 9 = 24 + 54x + 92x² - 2x³
x² + 3x³ - 2x + 9 - 92x² = 24 + 54x + 92x² - 2x³ - 92x²
-91x² + 3x³ - 2x + 9 + 2x³ = 24 + 54x -2x³ + 2x³
-91x² + 5x³ - 2x + 9 - 54x = 24 + 54x - 54x
-91x² + 5x³ - 56x + 9 - 24 = 24 - 24
-91x² + 5x³ - 56x -15 = 0
Hope this helps!
Maybe brainliest?
Describe the relationship between base 4 and exponent 3
there are no choices I just need an answer
Answer:
To the power 3 means cube.
Whenever you cube an even number it is a multiple of 8.
Whenever an exponent is used on 4, the number is always a square.
The value of the give exponent is 64.
Given that, the base is 4 and exponent is 3.
What is the exponent?Exponent is defined as the method of expressing large numbers in terms of powers. That means, exponent refers to how many times a number multiplied by itself.
With the base 4 and exponent 3, we have
4³
= 4×4×4
= 64
Therefore, the value of the give exponent is 64.
To learn more about an exponents visit:
https://brainly.com/question/15993626.
#SPJ2
PLEASE HELP ME IM BEGGING I also need the work shown
Answer:
Step-by-step explanation:
Obtain an estimate for the following computation by rounding the numbers so that the resulting arithmetic can easily be performed by hand or in your head. Then, use a calculator to
perform the computation How reasonable is your estimate when compared to the actual answer?
2815-15.458
An estimate of the difference is (Type a whole number
Answer:
Step-by-step explanation:
2915 can stay as it is; 15.458 should be rounded down to 15. Then we have
2915-15, or 2900 (which is a very reasonable estimate).
23
edition
**MINATO
14. What fraction of a day is 5 hours 2 minutes
Answer:
151/720
Step-by-step explanation:
1 day = 24 hours = 1440 minutes
5 hours 2 minutes = 302 minutes
302/1440 = 151/720
POINTS PLZ HELP!
What is the complete factorization of 8x2 − 8x + 2?
A.
2(4x − 1)2
B.
8(x − 1)(x + 1)
C.
2(2x − 1)2
D.
2(x − 2)(x + 2)
Answer:
Step-by-step explanation:
[tex]step^ 1=>2(4x^{2} -4x+1)\\step^2=> 2(2x-1)^2[/tex]
What combination of transformations is shown below?
rotation, then translation
rotation, then reflection
reflection, then rotation
reflection, then translation
Pete read 2/5 of his book on the first day and 1/4 of his book on the second day. What fraction of the book Pete has left to read after two days of reading
=========================================================
Work Shown:
2/5 = 8/20 .... multiply top and bottom by 4
1/4 = 5/20 ..... multiply top and bottom by 5
The fractions 2/5 and 1/4 are equivalent to 8/20 and 5/20 in that order.
These new equivalent fractions add to 8/20+5/20 = (8+5)/20 = 13/20
After two days, Pete has read 13/20 of the book.
This leaves 1 - (13/20) = 20/20 - 13/20 = (20-13)/20 = 7/20 of the book left to be read.
Note how 13/20 + 7/20 = (13+7)/20 = 20/20 = 1
4. Which of these types of angles have the same measure
after being rotated, reflected, or translated in a coordinate
plane? Select all that apply.
a. Acute angles
b. Right angles
c.Obtuse angles
Where do planes ABC and BFG intersect?
Answer:
Letter B
Step-by-step explanation:
Use the Discriminant to determine if the quadratic equation has complex/no real solutions, one real solution, or two real solutions. Give the value of the a. 2x^2 – 3x - 10 = 0 b.x^2 - 6x + 9 = 0 c.g(x)=x^2-8x+20
Answer:
Step-by-step explanation:
discriminant = 3² – 4·2(-10) = 89
discriminant > 0 ∴ two real solutions
Please helpp. I have to get this done before 10:05.
Answer:Adjacent angles are two angles that have a common vertex and a common side but do not overlap. In the figure, ∠1 and ∠2 are adjacent angles.
Step-by-step explanation:
It is correct