Determine the quadratic curve of best fit for the data. Then estimate what the value of will be when = −4. {(−3,2), (0,5), (1,7.3), (−1,3.3), (−6,5), (−7,7.3)} Answer choices 4.3 5.3 3.3 2.3
Answers
Answer:
The value of 'y' when x = -4 is 2.3
Step-by-step explanation:
Curve of best fit can be found by plotting the points on MS Excel and drawing a curve that goes through the points as shown in the attached graph
The equation that approximate the curve from which the y-value at a x-value of -4 can be estimated is found as follows
The general equation for a quadratic equation is y = a·x² + b·x + c
Therefore, we get;
2 = a·(-3)² + b·(-3) + c
2 = 9·a - 3·b + c
5 = 0·a + 0·b + c
5 = c
7.3 = 1·a + 1·b + c = a + b + 5
7.3 = a + b + 5
2.3 = a + b
2 = 9·a - 3·b + 5
-3 = 9·a - 3·b
Solving gives;
a = 13/40, b = 79/40
The equation of the quadratic curve is therefore;
y = (13/40)·x² + (79/40)·x + 5
When x = -4, we get;
y = (13/40)·(-4)² + (79/40)·(-4) + 5 = 2.3
When x = -4, y = 2.3
Plotting the points on MS Excel we find from the attached graph that the estimated value of 'y' when x = -4 is as calculated (2.3).
Related Questions
Write a function rule for “The output is five more than the input.”
y=x-5
y=x+5
y=mx=b
Answers
Answer:
y = x + 5
Step-by-step explanation:
The output (y) is five more than the input (x)
and this is expressed symbolically as
y = x + 5
what number multiples to 24 and adds to 10?
Answers
Answer:
4 and 6?
im not sure if you meant numbers
Step-by-step explanation:
Tom needs to plow 1.1 acres of land. If he can plow 5.5 acres in an hour, how many hours will it take?
Help! (16 pts if you answer!)
Answers
Given:
Tom needs to plow 1.1 acres of land.
He can plow 5.5 acres in an hour.
To find:
The time taken by Tom to plow 1.1 acres of land.
Solution:
We have,
Time take by Tom to plow 5.5 acres = 1 hour
Time take by Tom to plow 1 acre = [tex]\dfrac{1}{5.5}[/tex] hour
Time take by Tom to plow 1.1 acres = [tex]\dfrac{1.1}{5.5}[/tex] hour
= [tex]0.2[/tex] hour
Therefore, the time taken by Tom to plow 1.1 acres of land is 0.2 hour.
what is 2x+5=y and 5x+4=y pls hurry
Answers
Answer:
( 1/3, 5 2/3) Or (0.33, 5.66)
Step-by-step explanation:
If you graph the 2 equations and see where they intersect, they will land on the answer.
Mathhhhhhhhhhhhhhhhhhhh
Which statement applies?
Answers
Answer:
it is the first one because you would be deciding by 2
Vertical angles are
90 degrees
Adjacent
Congruent
Straight
Answers
Answer:
Vertical angles are across from each other on any two intersecting lines and are always congruen
Will mark brainliest if done within 20 minutes of this being posted! NO LINKS NO FILES. Solve the radical equations and show your work, check your solutions too.
Answers
Step-by-step explanation:
5√x+3 = -20
÷5. : √x+3 = -4
square: x+3 = 16
-3: x = 13
√x+18 -2 = x -4
+2 : √x+18 = x -2
square: x+18 = x^2 - 4x +4
-18: x = x^2 -4x -14
-x : 0 = x^2 -5x - 14
foil: (x- 7) (x+2) = 0
x = 7, -2
Use the long division method to find the result when 4x^3+23x^2 + 21x + 30 is
divided by x +5.
Answers
Answer:
A polynomial is an algebraic expression made up of two or more terms subtracted, added, or multiplied. A polynomial can contain coefficients, variables, exponents, constants, and operators such as addition and subtraction.
It is also important to note that, a polynomial can’t have fractional or negative exponents. Examples of polynomials are; 3y2 + 2x + 5, x3 + 2 x 2 − 9 x – 4, 10 x 3 + 5 x + y, 4x2 – 5x + 7) etc. Like number, polynomials can undergo addition, subtraction, multiplication, and division.
We saw addition, subtraction, multiplication, and long division of polynomials previously.
hope it helps make brainlliest ty
Someone help me this is mathematics I NEED HELP PLZ
Answers
Answer:
7a-12
Step-by-step explanation:
explanation is in the pic.
if it helps don't forget to like and mark me down
Answer:
Your answer is B. 7a - 12
Because -3a + 15 - 2 + 5(2a - 5) is equal to 7a - 12, When you Simplify the expression your answer would be B.
~Hoped this helped~
~Brainiliest please~
A cliff diver is 64 feet above the surface of the water. The formula for calculating the height (h) of the diver after t seconds is h = -16t2 + 64t How long does it take for the diver to hit the surface of the water?
Answers
Answer:
2 seconds
Step-by-step explanation:
math
Find the length of the bold arc.Leave pi in your
answer.
Answers
Answer:
5688 pi ft
Step-by-step explanation:
lol
need help with this !
Answers
Answer:
(-2,14) Hope this helps! Have a great day!!!
ratios that are equivalent to 9:6.
Answers
Answer:
3:2
Step-by-step explanation:
Answer:
3:2 , 18:12 , 27:18
Step-by-step explanation:
There are endless ratios that are equal to 9:6.
Such as 3:2 , 18:12 , and 27:18.
To find equivalent ratios, simply divide or multiply the two numbers in the ratio by the same number.
For example, the ratio is 9:6.
9/3 = 3
And, 6/3 =2
So therefore an equivalent ratio is 3:2.
15% off an annual subscription of 86$.How much will the customer save.
Answers
Answer:
$12.90/ 12.9
Step-by-step explanation:
divide 15 % by 86
Consider the following polynomial:
-2a^3b^2+5ab^5+7b4+8
What is the degree, leading coefficient, constant, and leading term of this polynomial?
*(Can you please show or tell me step by step on how u got there, please)
Answers
Answer:
degree: 5
leading coef: 5
constant: 8
leading term: 5ab^5
Step-by-step explanation:
degree is highest exponent leading coef is number in the term w highest exp, constant is the number with no variables attached and leading term is term w highest exp
List all the transformations for the following equation.
Answers
Answer:
flipped over the x-axis
horizontal shift left 7 units
vertical shift down 6 units
Step-by-step explanation:
A marble is selected at random from a jar containing 30 red marbles, 10 yellow marbles, and 60 green marbles. Find the theoretical probability that it is either red or green.
Answers
there is a 90% chance its a red or green or a 90/100 chance
Step-by-step explanation:
first you need to count your whole which would be the sum of adding all the marbles which is 100 then add the red and green that's 90 lastly you make a fraction 90/100 (simple the fraction if asked )
helppp!!!!!! :(((((((((((((((((((((((((((((
Answers
Answer:
= <><=>=<>=<<Here, is the answer of comparison
Working on math right now!
Answers
Answer:
Hi! The answer to your question is A. [tex]5^{4} * 4^{8}[/tex]
Step-by-step explanation:
☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆
☆Brainliest is greatly appreciated!☆
Hope this helps!!
Stay Safe!!!
- Brooklynn Deka
What’s a possible answer for this question?
Answers
Answer:
x-4
Step-by-step explanation:
you get the value of h(x) by dividing f(x)/g(x), so you only put they values for divide.
Please help I'm so stressed over this math ok here it is It costs $12.50 to enter an amusement park and $1.50 to play each game. Solve an inequality to find the number of games, g, Cole can play if he has $35 to spend at the park. Enter your answer in the box.
Answers
Answer:
12.50 + 1.50x < 35
Step-by-step explanation:
X represents the number of games that Cole plays. The admission price plus the money he spends on games should be LESS THAN or EQUAL to 35 dollars.
HELP QUICK PLS :’( What is the equation of the line that goes through (2, 2) and is perpendicular
to y = 5x + 3?
Answers
Answer:
b
Step-by-step explanation:
explanation:
Noah uses 1/2 of a cup of vinegar in his salad dressing recipe. How much vinegar would Noah use to make 3 1/6 recipes? Write your answer as a fraction or as a whole or mixed number.
(Please help me)
Answers
Answer:
1 7/12 cups
Step-by-step explanation:
1/2 x 3 1/6 = 1/2 x 19/6 = 19/12 or 1 7/12
For 1 he uses half cup
For 3 1/6 of the same recipe
He would use:-1/2*3 1/6
19/12 cup of vinegar
=1 7/12(Answer)
Kim wants to solve the equation 538+ 223= x. How should Kim rewrite the sum in order to solve for x?
Answers
Answer:
x = 761
Step-by-step explanation:
x = 538 + 223
x = 761
Help me pleaseeeee 20 points :)
Answers
9514 1404 393
Answer:
down 8 unitsright 3 unitsStep-by-step explanation:
Find corresponding points on the original image and the translated image. Use their coordinates, or count grid squares, to see what the translation is.
Y increases when translation is upward.
X increases when translation is to the right.
__
Here, the figure is translated right 3 units and down 8 units.
45 minutes ago
Share
Background
Layout
Theme
Transition
4.
P:
Caleb invests $10,000 in a savings
account that pays 3% simple interest.
How many years will it take the account
to grow to $12,700, if he does not make
any withdrawals or deposits?
A 7 years
B 12 years
C 9 years
22 years
r:
t:
D
k to add speaker notes
Answers
Answer:
876889068
Step-by-step explanation:
12. A rectangular box has a height of 6 feet and a width of 4 feet. If the length of the three-dimensional diagonal is 13 feet, what is the length of the box? Round to the nearest hundredth.
Answers
Answer:
6×4=24 13×24=96
round to the nearest hundreds is 100
sorry if wrong
The length of a rectangle is 3yd longer than its width. If the perimeter of the rectangle is 26 yd ,find its area
Answers
Answer:
A=40
Step-by-step explanation:
There are two sides of a rectangle that are the length.
So at 3 twice.
3+3=6
Subtract it from 26.
26-6=20
Divide by 4
20/4=5
Width= 5
Add 3 to 5
3+5=8
L=8
Check:
5+8+5+8=26
10+16=26
26=26
Area= L*W
8x5=40
A=40
Hope I'm correct!
HELPP. Mary and Frank have two bags in front of them. Mary's bag has 4 marbles; blue, yellow, red
and green. Frank's bag has 3 marbles; purple, orange, and pink. They will pick from their bag
at the same time. What is the probability of Mary selecting red from her bag and Frank selecting
purple from his bag?
AND CAN SOMEONE EXPLAINING HOW THEY GOT THE ANSWER
Answers
Answer: 1/12 is the answer
Step-by-step explanation: 3 , 4
1 of those colors so , 1/3 x 1/4 = 1/12!!
i hope that helps <3
can someone help with this
Answers
Hyp= 2 (short leg)