The coefficients for the quadrature formula with the highest degree of precision are a = -2, b = -1/2, and c = -2/7.
To obtain the quadrature formula with the highest degree of precision for the integral ∫f(x)dx, we need to determine the coefficients a, b, and c in the formula zaf(1) + bf(4) + cf(5).
The highest degree of precision in a quadrature formula is achieved when it accurately integrates all polynomials up to a certain degree. In this case, we want the formula to integrate all polynomials up to degree 2 exactly.
To determine the coefficients a, b, and c, we can use the method of undetermined coefficients. We construct three linear equations by substituting polynomials of degree 0, 1, and 2 into the quadrature formula and equating them to their respective exact integrals.
Let's denote the function f(x) as f(x) = c₀ + c₁x + c₂x², where c₀, c₁, and c₂ are constants.
For the polynomial of degree 0, f(x) = 1, we have:
zaf(1) + bf(4) + cf(5) = zaf₁ + bf₄ + cf₅,
where f₁ = 1, f₄ = 1, and f₅ = 1.
For the polynomial of degree 1, f(x) = x, we have:
zaf(1) + bf(4) + cf(5) = zaf₁ + 4bf₄ + 5cf₅,
where f₁ = 1, f₄ = 4, and f₅ = 5.
For the polynomial of degree 2, f(x) = x², we have:
zaf(1) + bf(4) + cf(5) = zaf₁ + 16bf₄ + 25cf₅,
where f₁ = 1, f₄ = 16, and f₅ = 25.
Solving the system of equations formed by these three equations will give us the values of a, b, and c.
By solving the system of equations, we find:
a = 6/(-3) = -2,
b = 6/(-12) = -1/2,
c = 6/(-21) = -2/7.
Therefore, the coefficients for the quadrature formula with the highest degree of precision are a = -2, b = -1/2, and c = -2/7.
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Select all of the scales that are equivalent to 3 cm to 4 km.
0.75 cm to 1 km
1 cm to 3/4 km
6 km to 8 cm
7.5 to 10 km
the answers is 1,3,and 4
A ball is dropped from a height of 384 feet. If it rebounds 3 4 of the height from which it falls every time it hits the ground, how high will it bounce after it strikes the ground for the fourth time
After striking the ground for the fourth time, the ball will bounce to a height of approximately 243 feet.
When the ball is dropped from a height of 384 feet, it rebounds to 3/4 of the height from which it falls. This means that after the first bounce, the ball reaches a height of (3/4) 384 = 288 feet. On the second bounce, it reaches (3/4) 288 = 216 feet. On the third bounce, it reaches (3/4) 216 = 162 feet. Finally, on the fourth bounce, it reaches (3/4) 162 = 121.5 feet.
However, it's important to note that the question asks for the height after the ball strikes the ground for the fourth time, not the height after the fourth bounce. Each bounce consists of a fall and a rise, so the ball strikes the ground twice in each bounce. Therefore we will use geometric sequence formula, the ball has struck the ground three times already (after the first three bounces), and it will strike the ground once more before reaching its final height. Thus, the ball will bounce to a height of approximately 121.5 + 121.5 = 243 feet after striking the ground for the fourth time.
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A rectangle measures 7.08cm by 3.2cm what is the area of the rectangle
Answer:
Measurements= 7.08/3.2
Area of rectangle= 7.08cm×3.2cm
= 22.656 cm(square)
assign total_owls with the sum of num_owls_a and num_owls_b.
To assign "total_owls" with the sum of "num_owls_a" and "num_owls_b", add the values of "num_owls_a" and "num_owls_b" together and assign the sum to "total_owls".
To complete the given task, you need to assign the variable "total_owls" with the sum of two other variables, "num_owls_a" and "num_owls_b". The first step is to identify the values of "num_owls_a" and "num_owls_b". Let's say "num_owls_a" is equal to 5 and "num_owls_b" is equal to 8.
Next, you add these values together: 5 + 8 equals 13. This sum represents the total number of owls. Finally, you assign this sum to the variable "total_owls". Now, whenever you refer to "total_owls", it will represent the value 13. Remember to update the values of "num_owls_a" and "num_owls_b" if you need to calculate the sum again in the future.
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A line passes through $A(1,1)$ and $B(100,1000)$. How many other points with integer coordinates are on the line and strictly between $A$ and $B$
Answer:
8
Step-by-step explanation:
Integers are whole numbers or opposite of whole numbers.
The slope is 111/11.
How?
Change of y is 1000-1=999.
Change of x is 100-1=99.
The slope is 999/99=111/11.
So if we start at (1,1) and we rise 111 and run 11 right, we get (12,112).
*Rise effects y and run effects x.
If we do that again from (12,112) we get (23,223).
Following the pattern of going up 111 and right 11 from each new location discovered we get all the of these points:
Start (1,1)
(12,112)
(23,223)
(34,334)
(45,445)
(56,556)
(67, 667)
(78, 778)
(89, 889)
(100, 1000) which is the end.
So we just need to count tthe points between begin point and end point which is 8 points.
who ever gets it 5 star and brainlessiess
Answer:
I think it C if it not please don't report me
A larger number is 4 more than 5 times the small number. If their sum is 46, what are the two numbers? Write and solve an equation for this situation.
Large Number:
Equation:
Small Number:
The value of the larger number is 39 and the value of smaller number is 7 and the equation is x =5y+4
What is an equation?
An equation is a mathematical statement with an 'equal to' symbol between two expressions that have equal values. For example, 3x + 5 = 15. There are different types of equations like linear, quadratic, cubic, etc.
Given,
The larger number is 4 more than 5 times of smaller number.
Let x be the larger number and y be the smaller number and the sum is 46.
According to question,
x = 4+5y
and x+ y = 46
Substitute the value of x, we get
4 +5y +y = 46
4 +6y = 46
6y = 42
y = 7
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Which is a true statement?
1/2
3/4
5/6
7/8
<1 and <2 are congruent
<1 and <3 are congruent
<1 and <4 are congruent
<1 and 7 are congruent
Answer: it’s c
_____________________
What is the simplified value of the exponential expression 27^((1)/(3)) ?
Answer: 3
Step-by-step explanation:
A fractional exponent is the root of a number by the denominator
Which looks like: \(\sqrt[3]{27}\)
And the cube root of 27 is 3.
A watering can contains 8 quarts of water. Theo uses 6 cups to water his houseplants.
How many cups of water are left in the watering can?
The amount left in the can is an illustration of subtraction or differences
There are 2 quarts of water left in the watering can
How to determine the amount left in the watering can?The given parameters are:
Content = 8 quarts
Used = 6 quarts
To calculate the amount of water left, we use:
Content = Used + Left
Substitute known values
8 = 6+ Left
Subtract 6 from both sides
Left = 2
Hence, there are 2 quarts of water left in the watering can
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30 Points!
I need help with these 3 questions.
Thank you!
2.
Select the correct answer.
Which transformation of the parent square root function will result in the given domain and range?
domain: [2,00)
range: (3, 0)
A.
B.
; (b) = (x + 2) + 3
g(x) = (x - 2)2 + 3
h(x) = (x – 3): –
k(x) = (x + 3)} – 2
Oc.
OD.
Reset
Next
Answer:
I think the correct answer of these qusion is g(x)=(x_2)2+3
Find a factor pair of 80 that has a sum of 21.
Answer:
16 and 5
Step-by-step explanation:
Hope that helps! :)
A sample of 1300 computer chips revealed that 74% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 73% of the chips do not fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that do not fail is more than the stated percentage. Is there enough evidence at the 0.05
level to support the manager's claim?
Step 4 of 7:
Determine the P-value of the test statistic. Round your answer to four decimal places.
The P-value of the test statistic is approximately 0.0445. To determine the P-value, we need to perform a hypothesis test. The null hypothesis (H₀) is that the actual percentage of chips that do not fail is equal to or less than the stated percentage of 73%.
The alternative hypothesis (H₁) is that the actual percentage is greater than 73%.
We can use the normal approximation to the binomial distribution since the sample size is large (1300) and both expected proportions (73% and 74%) are reasonably close. We calculate the test statistic using the formula:
z = (P - p₀) / √[(p₀ * (1 - p₀)) / n]
where P is the sample proportion (74% or 0.74), p₀ is the hypothesized proportion (73% or 0.73), and n is the sample size (1300).
Substituting the values, we get:
z = (0.74 - 0.73) / √[(0.73 * 0.27) / 1300]
Calculating this expression, we find that z is approximately 1.556.
Since we are testing if the actual percentage is more than the stated percentage, we are interested in the right-tailed area under the standard normal curve. We find this area by looking up the z-value in the standard normal distribution table or using statistical software. The corresponding area is approximately 0.0596.
The P-value is the probability of observing a test statistic as extreme as, or more extreme than, the one obtained under the null hypothesis. Since the P-value (0.0596) is less than the significance level of 0.05, we have enough evidence to reject the null hypothesis.
Therefore, there is sufficient evidence at the 0.05 significance level to support the quality control manager's claim that the actual percentage of chips that do not fail in the first 1000 hours is more than the stated percentage.
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What would not be a step to solve for 5 x 15 2 x = 24 4 x?
The value of x in the equation is 9/7.
To solve the equation 5x + 15 - 2x = 24 - 4x, we need to perform certain steps to isolate the variable x on one side of the equation. Here is the step-by-step process to solve the equation:
Combine like terms on both sides of the equation:
5x - 2x + 15 = 24 - 4x
Simplify the expressions:
3x + 15 = 24 - 4x
Add 4x to both sides of the equation to eliminate the variable from the right side:
3x + 4x + 15 = 24 - 4x + 4x
Simplify the expressions:
7x + 15 = 24
Subtract 15 from both sides of the equation:
7x + 15 - 15 = 24 - 15
Simplify the expressions:
7x = 9
Divide both sides of the equation by 7 to solve for x:
(7x)/7 = 9/7
Simplify the expressions:
x = 9/7
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the 150 residents of the town of wonderland were asked their age and whether they preferred vanilla, chocolate, or swirled frozen yogurt. the results are displayed next. chocolatevanillaswirl under 25 years old402015 at least 25 years old154020 what is the probability a randomly selected customer prefers chocolate given he or she is at least 25 years old?
If 150 town residents were asked about their age and yogurt , then the probability that a randomly selected customer prefers Swirl if age is at least 25 years old is 0.66 .
let X be = the selected customer that prefers swirled yogurt or is at least 25 years old ;
The sum of all the customers that are "at least 25 years old" = 21 + 30 + 24 = 75 ;
the sum of all the customers that " like Swirl Yogurt" is = 24 + 24 = 48 ;
the total number of residents = 150 students ;
So , the probability is calculated as : ( 75+48 -24)/150 = 0.66 .
Therefore , the required probability is 0.66 .
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The given question is incomplete , the complete question is
The 150 residents of the town of wonderland were asked their age and whether they preferred vanilla, chocolate, or swirled frozen yogurt. the results are displayed next.
Age Chocolate Vanilla Swirl
under 25 years old 22 29 24
at least 25 years old 21 30 24
What is the probability a randomly selected customer prefers Swirl Yogurt given he or she is at least 25 years old ?
Select the statement below that is true about correlations.A. Correlations can only be negativeB. Correlations are a measure of how much one variable changes as the other variable changesC. Correlations are a measure used to determine the degree to which two variables are related.D. Correlations are a measure of causation between two variablesE. A negative correlation implies no relationship between variablesF. Correlations can only be positive
The statements that are True about the Correlations is , "Correlations are a measure used to determine the degree to which two variables are related" , the correct option is (c) .
In the question,
few statements about Correlation is given ,
we need to find the statement that is True .
we know that , Correlation is the term that is used to measure the degree of relationship between two variable ,
the correlation can be negative , positive or 0 ,
and the negative correlation implies that if one variable increases then other variable decreases and vice a versa .
So , from the above information about Correlation ,
we conclude that , the True statement is "Correlations are a measure used to determine the degree to which two variables are related. "
Therefore , the statement in option (c) is True .
The given question is incomplete , the complete question is
Select the statement below that is true about correlations.
(a) Correlations can only be negative
(b) Correlations are a measure of how much one variable changes as the other variable changes
(c) Correlations are a measure used to determine the degree to which two variables are related.
(d) Correlations are a measure of causation between two variables
(e) A negative correlation implies no relationship between variables
(f) Correlations can only be positive .
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Write an expression to represent the perimeter of the figure below.
х
44-2
5x + 3
3x + 1
Answer:
Using the equation below just add like terms:
P=a+b+c+d
5x+3x+x+4x
=13x
-2+1+3
=2
13x+2
A
(5, 2);
2x +y= 12
—3y - х = -11
I’m confused help !
Answer:
so (5;2) belongs to these equaliations
Step-by-step explanation:
(5;2) is the same as (x;y)
so u just plug in your numbers
—3y - х = -11
-3*2-5=-11
-6-5=-11
-11=-11
2x +y= 12
2*5+2=12
12=12
what is 3 3/4 as a decimal number
Answer:
3.75 is 3 3/4 in decomal form
A corner store sells two kinds of baked goods: cakes and pies. A cake costs $15 and a pie costs $13. In one
day, the store sold 9 baked goods for a total of $121. How many cakes did they sell?
a. 8 cakes
c. 7 cakes
b. 2 cakes
d. 4 cakes
Answer:
a. 8
Step-by-step explanation: Out of 12 baked goods sold , let the number of cakes sold, be x in number and pies sold were 12 − x in number. Total sell was $ 144 , 1 cake costs $ 14 and 1 pie costs, $ 8 ∴ 14 ⋅ x + ( 12 − x ) ⋅ 8 = 144 or 14 x − 8 x = 144 − 96 or 6 x = 48 ∴ x = 8
Which number is between 6 1/8 and the square root of 64?
A. The square root of 64
B. 7 1/2
C. The opposite of the square root of 49
D. 8.16
Please help me
Answer:
its b
Step-by-step explanation:
i took the test
INEQUALITY QUESTION PLEASE HELP
Answer:
C
Step-by-step explanation:
("Extra points")
Question: The bottom part of this block is a rectangular prism. The top part is a square pyramid. You want to cover the block entirely with paper. How much paper do you need? Use pencil and paper to explain your reasoning.
Answer:
\(145 \text{ cm}^2\)
Step-by-step explanation:
We can represent the surface area of the composite figure as:
\(SA = 4(\text{area of triangle side}) + 4(\text{area of rectangle side}) + (\text{area of pyramid base})\)
First, we can solve for the area of one of the triangle sides.
\(A_\triangle = \frac{1}{2}bh\)
\(A_\triangle = \frac{1}{2} \cdot 5 \cdot 4\)
\(A_\triangle = 10 \text{ cm}^2\)
Next, we can solve for the area of one of the rectangle sides.
\(A_\square = lw\)
\(A_\square = 5 \cdot 4\)
\(A_\square = 20 \text{ cm}^2\)
Next, we can solve for the area of the pyramid base.
\(A_\text{base} = lw\)
\(A_\text{base} = 5 \cdot 5\)
\(A_\text{base} = 25 \text{ cm}^2\)
Finally, we can solve for the total surface area of the composite figure by plugging the values we just solved for into the uppermost equation.
\(SA = (4 \cdot A_\triangle) + (4 \cdot A_\square) + A_\text{base}\)
\(SA = 4(10 \text{ cm}^2) + 4(20\text{ cm}^2) + 25\text{ cm}^2\)
\(SA = 40 \text{ cm}^2 + 80\text{ cm}^2 + 25\text{ cm}^2\)
\(\bold{SA = 145 \, \textb{ cm}^2}\)
you pay $175 for 5 football tickets. How much will you for each (1) ticket?
Answer:
Step-by-step explanation:
175 ÷ 5 = 35
$35 per ticket
Answer:
35
Step-by-step explanation:
It's cuz you want to know how much one ticket costs right?
Sp do 175 divded by 5
You should get 35 as the answer!
A student is taking a multiple-choice test in which each question has four possible answers. She knows the answers to 5 of the questions, can narrow the choices to 2 in 3 cases, and does not know anything about 2 of the questions. What is the probability that she will correctly answer A) 10, b) 9, c) 8 d) 7, e) 6, and f) 5 questions?
Do not need to answer every part if they are worked the EXACT same way.
the probability that she will correctly answer
A) 10 questions = 0
b) 9 questions = 0.00003
c) 8 questions = 0.00039
d) 7 questions =0.00309
e) 6 questions = 0.01622
f) 5 questions = 0.0584
Here the total number of question is 5+3+2= 10, and every question has four possible answers, for this problem, we will be using the binomial distribution, the formula is :
\(C_{n,k}\)\(p^{k}\)\(q^{n-k}\) ,here C is the combination, p is the probability of success and q is the probability of having the success
for the given situation :
the p = 1/ 4 whereas, q=3/4
here n =10
now for different values of k which is the number of successes, we substitute the know values in the formula, and we get
P(k=10) = 0
P(k=9) = 0.00003
P(k=8) = 0.00039
(P=7)= 0.00309
(P=6)=0.01622
(P=5)= 0.0584
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T/F: if the slope (b) of ŷ is positive, then the correlation coefficient (r) must also be positive.
True. The correlation coefficient (r) must also be positive, indicating a strong positive linear relationship between the two variables.
The correlation coefficient (r) measures the strength and direction of the linear relationship between two variables. It ranges from -1 to 1, where a value of -1 indicates a perfectly negative linear relationship, a value of 1 indicates a perfectly positive linear relationship, and a value of 0 indicates no linear relationship. If the slope (b) of ŷ is positive, it means that as the independent variable increases, the dependent variable also increases.
In addition to the above explanation, it is important to note that while a positive slope (b) of ŷ indicates a positive linear relationship between two variables, it does not necessarily mean that the correlation coefficient (r) will always be positive. For example, if there is a weak positive linear relationship between two variables, the correlation coefficient (r) may still be positive but not as strong as if there was a strong positive linear relationship. Similarly, there may be situations where the correlation coefficient (r) is positive but the slope (b) of ŷ is not positive, such as in a curvilinear relationship where the relationship between the two variables is not linear.
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If a function is defined as C(x) =(.80x, for 0 500 Find the value of C(100), C(255), C(550), C(500), C(O), C(250), C(400) .
Answer:
80 ; 204 ; undefined ; 400 ; 0 ; 200 ; 320
Step-by-step explanation:
C(x) =(.80x, for 0 500 )
Find the value of :
C(100) = 0.80*(100) = 80
C(255) = 0.80 * 255 = 204
C(550) = undefined
C(500) = 0.80 * 500 = 400
C(O) = 0.80 * 0 = 0
C(250) = 0.80 * 250 = 200
C(400) = 0.80 * 400 = 320
A rock is thrown from a cliff into a ravine. The function ℎ() = −16^2 + 19 + 2560 describes the height, in feet, of the rock from the ground seconds after it is thrown. What is the height of the rock, in feet, 2 seconds after it is thrown?
Answer:
d
Step-by-step explanation:
Dilate the trapezoid using center (-3,4) and scale factor 1/2.
The coordinates of the vertices of the image of the trapezoid are A'(x, y) = (- 4, 1), B'(x, y) = (- 2, 1), C'(x, y) = (- 5 / 2, 5 / 2) and D'(x, y) = (- 7 / 2, 5 / 2).
How to find the image of a trapezoid by dilation
In this question we have a representation of a trapezoid, whose image has to be generated by a kind of rigid transformation known as dilation, whose equation is described below:
P'(x, y) = O(x, y) + k · [P(x, y) - O(x, y)]
Where:
O(x, y) - Center of dilationk - Scale factorP(x, y) - Coordinates of the original point.P'(x, y) - Coordinates of the resulting point.If we know that k = 1 / 2, A(x, y) = (- 5, - 2), B(x, y) = (- 1, - 2), C(x, y) = (- 2, 1), D(x, y) = (- 4, 1), O(x, y) = (- 3, 4), then the coordinates of the vertices of the image are:
Point A'
A'(x, y) = O(x, y) + k · [A(x, y) - O(x, y)]
A'(x, y) = (- 3, 4) + (1 / 2) · [(- 5, - 2) - (- 3, 4)]
A'(x, y) = (- 3, 4) + (1 / 2) · (- 2, - 6)
A'(x, y) = (- 3, 4) + (- 1, - 3)
A'(x, y) = (- 4, 1)
Point B'
B'(x, y) = O(x, y) + k · [B(x, y) - O(x, y)]
B'(x, y) = (- 3, 4) + (1 / 2) · [(- 1, - 2) - (- 3, 4)]
B'(x, y) = (- 3, 4) + (1 / 2) · (2, - 6)
B'(x, y) = (- 3, 4) + (1, - 3)
B'(x, y) = (- 2, 1)
Point C'
C'(x, y) = O(x, y) + k · [C(x, y) - O(x, y)]
C'(x, y) = (- 3, 4) + (1 / 2) · [(- 2, 1) - (- 3, 4)]
C'(x, y) = (- 3, 4) + (1 / 2) · (1, - 3)
C'(x, y) = (- 3, 4) + (1 / 2, - 3 / 2)
C'(x, y) = (- 5 / 2, 5 / 2)
Point D'
D'(x, y) = O(x, y) + k · [D(x, y) - O(x, y)]
D'(x, y) = (- 3, 4) + (1 / 2) · [(- 4, 1) - (- 3, 4)]
D'(x, y) = (- 3, 4) + (1 / 2) · (- 1, - 3)
D'(x, y) = (- 3, 4) + (- 1 / 2, - 3 / 2)
D'(x, y) = (- 7 / 2, 5 / 2)
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