What is the quadratic regression equation that fits these data? WILL GIVE BRAINLIEST.
Answers
Answer:
D
Step-by-step explanation:
Just take x and replace it by 0 to see if you get 12
you will get 11.93 wich is close to 12
A regression can either be linear, nonlinear or no relationship at all
The equation of the quadratic regression is [tex]y = -0.89x^2 +3.24x +11.93[/tex]
To determine the equation of the quadratic regression, we make use of a graphing calculator.
From the graphing calculator, we have the following calculator summary
a = -0.89 b = 3.24 c = 11.93A quadratic regression equation is represented as
[tex]y = ax^2 + bx + c[/tex]
So, we have:
[tex]y = -0.89x^2 +3.24x +11.93[/tex]
Hence, the equation of the quadratic regression is [tex]y = -0.89x^2 +3.24x +11.93[/tex]
Read more about regression equations at:
https://brainly.com/question/732489
Related Questions
Plz help I’ll mark Brainlynest
Answers
Answer:
36.00 units
Step-by-step explanation:
Lengths of horizontal and vertical segments are easily determined by subtracting coordinates or counting grid squares:
ST = 6 -1 = 5
TR = 5 -(-1) = 6
IP = 1 -(-6) = 7
PE = 2 -(-3) = 5
The lengths of the diagonal segments are found using the Pythagorean theorem. Those lengths are the root of the sum of the squares of the rise and run. As before, you can determine those from counting squares or subtracting coordinates.
RI = √(2^2 +5^2) = √29 ≈ 5.385
ES = √(3^2 +7^2) = √58 ≈ 7.616
Then the perimeter is the sum of segment lengths:
Perimeter = ST +TR +RI +IP +PE +ES
= 5 + 6 + 5.385 +7 +5 +7.616 = 36.001
Rounded to hundredths, the perimeter is 36.00 units.
can someone help me with this question
Answers
Answer: a (see explanation below) .b.) rhombus .c) trapezoid in USA or trapezium elsewhere in the world
Step-by-step explanation:
For a.) Draw a horizontal from the bottom vertex, extending 2 units to the right. Then form a triangle by connecting a line from the right end of that line up to the right angle at the top of the original triangle
As per the given diagram
(a) represents a parallelogram not rectangle as shown in construction.
(b) Shape made by three congruent triangles on the grid below represents trapezium.
(c) Four congruent triangle in the grid below represents rhombus.
What are congruent triangles?"Two triangles are said to be congruent if the measure of all the three corresponding sides and angles of one triangle are equal to that of other triangle."
According to the question,
(a) First diagram we have to construct a triangle with given triangle in such a way it forms a parallelogram but not rectangle.
As shown in the constructed diagram.
(b) In the fourth diagram given quadrilateral having one pair of parallel line , therefore trapezium.
(c) In the second diagram all the four sides are congruent and parallel to each other and diagonals bisects each other at 90°, therefore it is rhombus.
Hence, (a) as shown in construction ,(b) trapezium and (c) rhombus is the correct answer.
Learn more about congruent triangles here
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A circle has a radius of 6 in. The inscribed equilateral triangle will have an area of:
Answers
Answer:6 √3
Step-by-step explanation:
Length of a side of an equilateral triangle inscribed in a circle =
r
√
3
where r is the radius of the circle
Therefore, Area =
√
3
a
2
4
a
=
6
√
3
Answer:
27√3
Step-by-step explanation:
Length of a side of an equilateral triangle inscribed in a circle =
r√3, where r is the radius of the circle
Therefore, Area =
√3 a^2/4
a=6√3
a/Asin = b/Bsin = c/Csin
c = a * sin C/sin A = 6(sin 120/sin 30) = 6√3
Would someone mind explaining to me how to do this? I'm In a real crunch with this.
Answers
Answer:
first option
Step-by-step explanation:
The solution to the system of equations given graphically is at the point/s of intersection of the 2 functions.
There is only 1 point of intersection at about x = 1.5
Write an equation for the translation of y=|x| 2 units up
Answers
Answer:
Step-by-step explanation:
y = |x|+2 is the equation
the translation of y = |x| 2 units up
Here is the histogram of the data distribution all websites are One what is the median of this distribution? 7, 9, 5, 4
Answers
Answer:
5
Step-by-step explanation:
To find the median of the distribution, since the columns are divided into boxes(segments), we simply count the number of individual boxes
Here, the total number of boxes would be 15 boxes , so we count 7 boxes starting form each of the ends, then the middle box is the median
Counting from each end, the middle box falls on 5 which makes it our median
Answer:
5
Step-by-step explanation:
The awnsers 5
the number 5 is in the middle of all the numbers.
need help with this question.
Answers
Answer:
12 and 93.
Step-by-step explanation:
Let the grandsons age be x then Mr. Roger's age = 8x - 3.
Five years ago the grandson's age was x-5 and Mr Rogers was 8x - 8 years old , so:
8x - 8 - (x - 5) = 81
8x - 8 - x + 5 = 81
7x = 81 + 8 - 5 = 84
x = 12.
So the grandson is 12 and Mt Rogers is 8*12 - 3 = 93.
What is the product of 6x – y and 2x – y + 2? 8x2 – 4xy + 12x + y2 – 2y 12x2 – 8xy + 12x + y2 – 2y 8x2 + 4xy + 4x + y2 – 2y 12x2 + 8xy + 4x + y2 + 2y
Answers
Answer:
(6x – y) * (2x – y + 2) =12x2 – 8xy + 12x + y2 – 2y
Step-by-step explanation:
(6x – y) * (2x – y + 2)
= 6x*(2x – y + 2) - y*(2x – y + 2)
= 12x^2 - 6xy + 12x - 2xy + y^2 -2y
= 12x^2 + 12x - 8xy - 2y + y^2
Out of the answer choices:
8x2 – 4xy + 12x + y2 – 2y
12x2 – 8xy + 12x + y2 – 2y
8x2 + 4xy + 4x + y2 – 2y
12x2 + 8xy + 4x + y2 + 2y
the second choice is a correct answer.
Answer:
Step-by-step explanation:
B. 12x2 – 8xy + 12x + y2 – 2y
At a DBE lecture of 100 students, there are 29 women and 23 men. Out of these students, 4 are teachers and 24 are either men or teachers. Find the number of women teachers attending the lecture.
Answers
Answer:
We operate the principle of sets to solve the problem. We are given the number of women to be 28 and men to be 23. The intersection will be while the union of both sets will be 24. To calculate the number of women teachers attending the lecture we first sum up the number of women and men and subtract from the intersection of both sets which gives us 3. Therefore, the number of teachers that are men are 3 while the number of women teachers are 1.
Step by step explaination:
Given the following, Let the set for men be represented by MM, that of women be represented by WW and that of teachers represented by TT.
Therefore, number of men i.e n(MM)= 23,
number of women i.e n(WW)= 29
number of teachers i.e n(TT)=4
number of men or teachers i.e n(MM U TT)= 24
Therefore, we have:
n(MM U TT)=n(MM) + n(TT) - n(MM n TT)
Therefore:
n(MM n TT)=n(MM) + n(TT) -n(MM U TT)
n(MM n TT)= 23+ 4 - 24 = 3
There fore number of men that are teachers are n(MM n TT)= 3 .
Therefore, from the number of teachers n(TT)=4
the number of teachers that are men are 3 while the number of women teachers are 1.
10 points question please help A water faucet turned 2 1/7 to the right and the 1 3/4 to the right again. How far has the facet turned?
Answers
Answer:
The faucet has turned a total distance of 3 25/28
Step-by-step explanation:
To know the total distance turned by the faucet, what we need to do is to add together the distances to which it has turned.
Mathematically, that would be;
2 1/7 + 1 3/4
which is;
15/7 + 7/4 = (60 + 49)/28 = 109/28 = 3 25/28
what is the solution to the inequality below? 2(x-15)> x/2
Answers
Answer:
x>20
Step-by-step explanation:
2(x-15)>x/2
2x-30>x/2
Multiply both sides by 2
4x-60>x
Subtract 4x from both sides
-60>3x
-20<x
Answer: x>20
Answer:
The correct answer is x ≥ 20.
A straight line passes through the origin and has a gradient of 4. Find the equation
Answers
Answer:
y = 4x
Step-by-step explanation:
The slope is 4.
The line passes through (0, 0).
Equation of a line y = mx + b, m is the slope, and b is the y-intercept.
y = 4x + b
Put x and y as 0.
0 = 4(0) + b
0 = b
The y-intercept is 0.
The equation of the line is y = 4x.
The table represents the function f(x). A 2-column table with 7 rows. The first column is labeled x with entries negative 3, negative 2, negative 1, 0, 1, 2, 3. The second column is labeled f of x with entries negative 9, negative 6, negative 3, 0, 3, 6, 9. What is f(3)
Answers
Answer:
9
Step-by-step explanation:
Okay, here we have a table with the x and y columns
What we are to find is F(3)
Now this is obtainable from the table
The term f(x) equals values in the table y
We can obtain the values of y from the equation linking x to y
Now the term f(3) can be obtained by checking the value of y or f(x) that corresponds to the value 3
We can see that it is the last term on the x side that can give the value of y we are looking for
So without much further ado we can see that it is the last value on the table y we are also looking at
This equals 9
So F(3) = 9
Answer:
9
Step-by-step explanation:
Hope this helps
Which of the following is not a function?
A. {(4,5), (4,2), (5,4), (2,4)}
B. {(1,2), (2,3), (3,4), (4,5)}
C. {(1,2), (2,3), (3,3), (4,5)}
D. {(4,1), (5,1), (6,1), (7,1)}
Answers
Answer:
A
Step-by-step explanation:
it is A for for two outgoing (y)there is one in going(x)
Answer:
The answer is (A)
Step-by-step explanation:
which graph represents a reflection of f(x)=1/10(10)x accross the y axis
Answers
B (second image)
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Find the greatest common factor of 24, 36, and 48. help
Answers
Answer:
24, 36, and 48
Step-by-step explanation:
those numbers are the most high common factor of 24, 36, and 48.
Answer:
12
Step-by-step explanation:
1, 2, 3, 4, 6, 8, 12, 24
1, 2, 3, 4, 6, 6, 9, 12, 18, 36
1, 2, 3, 4, 6, 8, 12, 16, 24, 48
hopefully this helped :3
An object traveled a total of 21 1/2 miles in five hours. If it traveled an equal number of miles each hour, how many miles did it travel each hour?
Answers
Answer: 4.3 miles
The decimal 4.3 is equivalent to the mixed number 4 & 3/10
=============================================================
Explanation:
Fractions are often a pain, so I find it helpful to convert to decimal form whenever possible.
1/2 = 0.5
21 & 1/2 = 21 + 1/2 = 21 + 0.5 = 21.5
21 & 1/2 miles = 21.5 miles
The object travels 21.5 miles in 5 hours. Divide the distance over the time value to get the speed (or rate). This is exactly identical to finding the number of miles traveled in one hour (since each hour the object travels the same amount of distance)
speed = distance/time = 21.5/5 = 4.3 mph
4.3 = 4 + 0.3 = 4 + 3/10 = 4 & 3/10
In my opinion, it is much easier to use decimals. Saying "the object traveled a distance of 4 & 3/10 miles" seems very clunky to me.
Therefore, each hour, the object travels 4.3 miles.
(a) P(1,0). Q(2,-5), R(-3, -5)
What triangle is this
Answers
This is a scalene obtuse triangle
An obtuse triangle is a triangle with an angle greater than 90 degrees, A scalene triangle is a triangle that has three different side lengths. You can find the side lengths(2,3,sqrt6) by plotting the triangle and using Pythagorean theorem. It is also visually clear that the triangle is obtuse if it is plotted.
Hope it helps <3
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. One hundred tickets, numbered 1, 2, 3, . . . , 100, are sold to 100 different people for a drawing. Four different prizes are awarded, including a grand prize (a trip to Tahiti). How many ways are there to award the prizes if it satisfies the given conditions.
Answers
Answer:
a
Step-by-step explanation:
Solve for x.
X-6
___ =5
3
Answers
Answer:
x = 21
Step-by-step explanation:
(x-6) /3 = 5
Multiply each side by 3
(x-6) /3 * 3 = 5*3
x-6 = 15
Add 6 to each side
x-6+6 = 15+6
x = 21
Verify the identity below with work and/ or explanation. 2gh/sin^2θ = 2gh sec^2θ/sec^2θ-1 Thanks!
Answers
Answer:
identify is verified, see work below.
Step-by-step explanation:
Verify following identity
2gh/sin^2θ = 2gh sec^2θ/sec^2θ-1
use identity 1+tan^2(θ) = sec^2(θ) on denominator of right-hand-side
right-hand side
= 2gh sec^2(θ) / (sec^2(θ)-1)
= 2gh sec^2(θ) / (tan^2(θ))
= 2gh sec^2(θ) * (cos^2(θ) / sin^2(θ) ) [note: sec^2(θ) = 1/cos^2(θ)]
= 2gh * 1 / sin^2(θ)
= 2gh / sin^2(θ)
= left-hand side
Therefore identify is verified.
In a plane, line e is perpendicular to line f, line f is perpendicular to line g, and line h is parallel to line f. which of the following must be true?
Answers
Answer:
a). line h is perpendicular to line g
Step-by-step explanation:
In these cases, always make a litle scetch, and just plot what is given.
You can immediately see the answer, which is answer a).
lf h is parallel to f and line f is perpendicular to line g,
then line h is perpendicular to line g.
Samad's age and his father's age
are 12 years old and 40 years old
respectively. How many years later
will Samad's father be twice as old as
Samad?
Answers
Answer:
Step-by-step explanation:
let x= time period in years between age now and when father's age=2* the samad's age
in x years father's age will be 40 + x years old
in x years samad's age will be 12+x years old
at a certain point in time, the father's age = 2*the samad's age
40+x=2*(12+x)
or, 40 +x=24 + 2x
or, 40-24 = x
x=16
test:
father=40+16=56
son=12+16=28
hence , after 16 years samad's father will be twice as old as samad
Please explain how you would prove that all circles are similar?
Answers
Answer:
Shapes are similar when one can be scaled to be like another one. Circles are always the same shape and they only vary in size. A very small circle can be expanded to be the same size as any other without changing it's shape, only size. However this is not true for ovals since they come in different shapes.
Step-by-step explanation:
The radius of the large sphere is double the radius of
the small sphere.
How many times is the volume of the large sphere than
the small sphere?
2
4
6
8
Answers
Answer:
8 times
Step-by-step explanation:
Volume of sphere 4/3 *pi*r^3
Let small sphere radius r1=r
So radius of large sphere R= 2r (given)
Put all valves in sphere formula and calculate
Small sphere vol v1 = 4/3*pi*r^3......... Let assume eq 1
Large sphere vol= 4/3*pi*(2r)^3
= 4/3*pi* 8r^3
Or = 8v1
substitute 4/3*pi*r^3 value from eq1
Answer:
8
Step-by-step explanation:
Given the ratio of the radii = a : b, then
ratio of volume = a³ : b³
Here the ratio of radii = 1 : 2 , thus
ratio of volume = 1³ : 2³ = 1 : 8
That is the volume of the larger sphere is 8 times the volume of smaller sphere.
how to do this question plz answer
Answers
Answer:
Step-by-step explanation:
George: x
Alex: x + 12
Carl: 3(x+12)
3x+36+x+x+12= 68
5x + 48 = 68
5x = 20
x = 4; George's age
4 + 12 = 16; Alex's age
3(4+12)= 3(16)= 48; Carl's age
George to Alex: 4:16 = 1:4
Alex to Carl: 16:48= 1:3
George to Carl 4:48= 1:12
Carl to Alex: 48:16 = 3:1
find the length of this
Answers
Answer:
Hey there!
We have tan 9= 21/BW
tan 9 (BW)=21
BW= 21/tan 9
BW= 132. 59
Hope this helps :)
Answer:
A- 132.59
Step-by-step explanation:
since we have to find the adjacent and already have the opposite we'll use tanθ = opp/adj
tan(9)= 21/WB
WB = 21/tan(9) (make WB the subject)
WB = 132.5887818 or 132.59
Instructions: Write the explicit rule. Remember to simplify and do not put spaces in your answer. Sequence: 30,0,−30,−60,… 30 , 0 , − 30 , − 60 , … = a n = Answer
Answers
Answer:
a(n)=60-30n
Step-by-step explanation:
Equation to use:
a(n) = a(1) + d(n-1)
where a(1) is the first term, d is the common difference between terms, and n is the nth term you are trying to find.
In this case, a(1) is 30, d is -30, and n is just n.
If you plug that into the equation and use the distributive property, you would get: a(n) = 30 -30n + 30.
Adding the two 30's gets you: a(n) = 60 - 30n, which is the solution.
solve for x 6x+238 and 3x+178 NEED HELP ASAP FIRST GETS BRAINLY
Answers
Answer:
x = -20
Step-by-step explanation:
These angles are opposite therefore they are the same angle/degree
so we can look at this problem as
6x+238=3x+178
(subtract 238)
6x=3x-60
(subtract 3x)
3x=-60
(divide by 3)
x=-20
PLEASE HELP ME!!!
Trevor asks his bank for a loan of $22000 to add a guest
room to his house. His bank offers financing at 7.25%
compounded monthly, for a term of 5 years, payable
monthly. What is Trevor's monthly payment?
Answers
Answer:
$526.3 is the monthly payment
Step-by-step explanation:
We use the compound interest formula to calculate the total amount payable on the loan.
Mathematically;
A = P(1 + r/n)^nt
Where A is the amount to pay
P is amount borrowed = 22,000
r is interest rate = 7.25/100 = 0.0725
t is years = 5 years
n is the number of times we compound lee year = 12 times since it’s monthly
Substituting these values, we have
A = 22,000(1 + 0.0725/12)^(12)(5)
A = 22,000(1 + 0.006041666666667)^60
A = $31,578
Monthly payment is total amount/ number of months
There are sixty months in 5 years
So monthly payment is 31578/60 = $526.3