The new revenue can be calculated as R = q*p = 2,000*4 = $8,000.
R(q) is the revenue function for the school lunch program, which is given by the equation q*p, where q is the quantity and p is the price. According to Braley and Nelson's study, the city of Pittsburgh had an increase in price of school lunches. The revenue can be calculated by multiplying the quantity (q) of school lunches with the new price (p) after the increase. Therefore, the new revenue (R) can be calculated by R = q*p. As an example, if the quantity of school lunches is 2,000 and the price is increased to $4, then the new revenue can be calculated as R = q*p = 2,000*4 = $8,000.
R(q) is the revenue function for the school lunch program, which is given by the equation q*p, where q is the quantity and p is the price. According to Braley and Nelson's study, the city of Pittsburgh had an increase in price of school lunches. The revenue can be calculated by multiplying the quantity (q) of school lunches with the new price (p) after the increase. Therefore, the new revenue (R) can be calculated by R = q*p. As an example, if the quantity of school lunches is 2,000 and the price is increased to $4, then the new revenue can be calculated as R = q*p = 2,000*4 = $8,000.
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HELPPP NOWWW PLEASE WITH THIS EQUATION
The angle CFD is 67.6 degrees.
What is Angle?An angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.
Given that ∠CFE=177 degrees.
We have to find angle CFD.
∠CFD+∠EFD=117
4z+74+9z+64=117
13z+138=117
13z=21
z=-1.6
Now substitute in ∠CFD =4(-1.6)+74
∠CFD =-6.4+74
=67.6 degrees
Hence, the angle CFD is 67.6 degrees.
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You are reviewing secondary data to help with a project concerning consumer preferences for television programs based on viewer income. Which of the following statements would NOT be of concern when considering the nature criteria for evaluating secondary data?
Select one:
a. Secondary data may be measured in units that may not be appropriate for the current problem.
b. The researcher must determine if the data are accurate enough for the purpose of the present study.
c. It is possible to reconfigure the available data so that the resulting data are more useful to the problem at hand.
d. The relationships examined should be taken into account.
The statement that would NOT be of concern when considering the nature criteria for evaluating secondary data is the relationships examined should be taken into account. Thus, option D is the answer
While it is important to take relationships into account when analyzing data, this statement is not specific to evaluating secondary data, but rather a general principle of data analysis.
The other statements listed are all relevant concerns when evaluating secondary data, as secondary data may not always be directly relevant or appropriate for the current problem, and it is important to assess the accuracy and usefulness of the data for the present study.
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Popcorn at a concession stand comes in two different-sized containers. The dimensions of the small container with a diameter of 4 in. are shown below.
A popcorn container shaped like a cylinder is shown. A dashed line across the top of the container is labeled four inches. The height of the container is labeled four and five tenths inches.
The large container of popcorn has the same height as the small container, but its diameter is 1.5 times greater. How do the volumes of the two containers of popcorn compare? Use 3.14 for π.
Select the answers from the drop-down lists to correctly complete each sentence.
The volume of the large container of popcorn is _______ in.^3
OPTIONS FOR BLANK : A) 56.52 B) 84.78 C)127.17 D) 169.56
This is ______ times the volume of the small container.
OPTIONS FOR THIS BLANK : A) 2.88 B) 2.25 C) 1.8 D) 1.5
The volume of the large container is given as follows:
113.04 in³.
The ratio of the volumes is of:
B) 2.25
How to obtain the volume of a cylinder?The volume of a cylinder of radius r and height h is given by the equation presented as follows:
V = πr²h.
The diameter of the smaller cylinder is of:
4 inches.
Hence the diameter and radius of the larger container is of:
Diameter: 4 x 1.5 = 6 inches.Radius: 0.5 x 6 = 3 inches.As the height of the cylinder is of 4 inches, the volume is given as follows:
V = 3.14 x 3² x 4
V = 113.04 in³.
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A six-sided die has an unknown number of faces marked with a six. Let k be this unknown number, which we would like to estimate. Our prior distribution for k is 15/8, j=1 P(k = j) = 1/16, j = 0,2,3,4,5,6. When the die is thrown each face has an equal chance of showing. The observed data is that the die was thrown twice, and it showed a six exactly once. (a) Write down the likelihood for the observed data. What is the maximum likelihood estimate for k? (b) Derive the normalized posterior distribution for k. What is the posterior mean for k? (c) Find the posterior predictive probability that if the die is thrown again, it will not show a six.
The posterior predictive probability that if the die is thrown again, it will not show a six is 5/6.
(a) The likelihood for the observed data is P(k=6|Data) = (1/16)*(1/6)^1 * (5/6)^1 = 5/96. The maximum likelihood estimate for k is 6.
(b) The normalized posterior distribution for k is P(k|Data) = (1/16)*(1/6)^1 * (5/6)^1 * (15/8) = 75/768. The posterior mean for k is 4.5.
(c) The posterior predictive probability that if the die is thrown again, it will not show a six is 5/6.
The maximum likelihood estimate for k (the unknown number of faces marked with a six on the six-sided die) is 6. The normalized posterior distribution for k is P(k|Data) = 75/768, and the posterior mean for k is 4.5. The posterior predictive probability that if the die is thrown again, it will not show a six is 5/6.
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All of the following are equivalent except:
A. 4%
B. .04
C. .4
D. 1/25
A box contains 11 Green marbles and 17 white marbles. If the first marvel chosen was a white marble, what is the probability of choosing, without replacement, another white marble
The probability of choosing, without replacement, another white marble is 16/27
How to find the probabilityThe probability of choosing another white marble can be calculated as follows:
From the problem it can be deduced that, there are 17 white marbles out of a total of 28 marbles (11 green + 17 white),
The probability of choosing a white marble
= 17 / 28
After the first white marble is chosen, the total number of marbles decreases to 27 and the number of white marbles decreases to 16.
The probability of choosing another white marble without replacement is = 16/27.
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12.97 what type of educational background do ceos have? in one survey, 344 ceos of medium and large companies were asked whether they had an mba degree. there were 97 mbas. estimate with 95% confidence the proportion of all ceos of medium and large companies who have mbas.
The proportion of all CEOs of medium and large companies who have MBAs is between 27.9% and 33.5%.
The formula we use is the Wilson Score Interval, which is a modified version of the Binomial Proportion Confidence Interval.
In this formula, we will use the following variables:
n = 344 (the total number of CEOs surveyed)
X = 97 (the number of MBAs)
z = 1.96 (the z-value corresponding to a 95% confidence level)
We then calculate the confidence interval as follows:
Lower Bound = (X + (z^2/2))/(n + z^2) - (z * SQRT((X * (1-X))/(n + z^2) + (z^2/4)) / (n + z^2)
Upper Bound = (X + (z^2/2))/(n + z^2) + (z * SQRT((X * (1-X))/(n + z^2) + (z^2/4)) / (n + z^2)
Plugging in the values for n, X, and z, we get the following confidence interval:
Lower Bound = 0.279
Upper Bound = 0.335
Therefore, we can be 95% confident that the proportion of all CEOs of medium and large companies who have MBAs is between 27.9% and 33.5%.
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Betsy, a recent retiree, requires $5,000 per year in extra income. She has $50,000 to invest and can invest in B-rated bonds paying 15% per year or in a certificate of deposit (CD) paying 5% per
year. How much money should be invested in each to realize exactly $5,000 in interest per year?
The amount of money invested at 15% =
The amount of money invested at 5% =
1) The amount of money invested at 15% = $30,000
2) The amount of money invested at 5% = $20,000
What is the amount invested?
The amount invested is the total cost of the mutual fund investment units you currently own. Amount Invested = Number of Units x Purchase NAV. The current value of the mutual fund investment units that you currently own.
To solve this problem, we need to set up and solve a system of equations. Let x be the amount of money invested in B-rated bonds and y be the amount of money invested in the CD. We know that:
x + y = $50,000 (the total amount of money invested must equal $50,000)
0.15x + 0.05y = $5,000 (the total interest earned must equal $5,000)
Now we can use the first equation to solve for one of the variables in terms of the other. If we subtract y from both sides of the first equation, we get:
x = $50,000 - y
We can substitute this expression for x into the second equation to get:
0.15($50,000 - y) + 0.05y = $5,000
Solving for y, we get:
y = $20,000
Now we can substitute this value back into the first equation to find the value of x:
x = $50,000 - $20,000
x = $30,000
Therefore, Betsy should invest $30,000 in B-rated bonds and $20,000 in a CD to earn exactly $5,000 in interest per year.
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For the following exercise, find the lengths of the missing sides if side a is opposite angle A, side b is opposite angle B, and side c is the hypotenuse.tanA=100,b=100
The length of the missing sides for given angles are
side a = 141.42135side b = 100side c = 1What is Pythagoras' Theorem?
Pythagoras' Theorem is a fundamental result in Euclidean geometry named after the ancient Greek mathematician Pythagoras. It states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.
In other words, if a and b are the lengths of the legs of a right triangle and c is the length of the hypotenuse, then the theorem can be written as:
c² = a² + b²
tan A = a/c
c = a / tan A
We know that a = 100 and tan A = 100
so c = a / tan A = 100/100 = 1
We also know that b = 100
Now we can use the Pythagorean Theorem to find a:
a² + b² = c
100^2 + 100^2 = 1²
10000 + 10000 = 1
20000 = 1
a = sqrt(20000) = √(2000) × √(10) = 140.7107 × 10[tex]{}^{1/2}[/tex] = 141.42135
So,
side a = 141.42135
side b = 100
side c = 1
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ap stats on average, how many people from the region will need to be selected to find one person who carries the genetic trait
On an average, about 2.13 people region will need to get selected in order to find that one person who carries the genetic trait.
Random selection is a very important process in research methodology. The purpose of random selection is to increase the generalizability of the results as when we draw a random sample from a large population, it is less likely to be subject to bias.
Since 47 percent of the people in the population are carrying the gene, the probability of random selection will be 0.47. But we need to also consider how many trials will be unsuccessful. Therefore, we will use the mean,
1/0.47 = 2.127 ≅ 2.13
--The given question is incomplete, the complete question is
"According to a recent survey, 47 percent of the people living in a certain region carry a certain genetic trait. People from the region will be selected at random one at a time until someone is found who carries the genetic trait. On average, how many people from the region will need to be selected to find one person who carries the genetic trait?"--
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Pls help me.
Tell me how to find 9
And also tell me how to find 8 in the sample above.
TYSM TO PEOPLE WHO HELPED
Step-by-step explanation:
add 6 and 2 to get 8 and add all the numbers to get 9
3 The ratio of cats to dogs in the local shelter is
5 to 8. Which of the following shows the
possible numbers of cats and dogs in the local
shelter?
A 30 dogs and 48 cats
B 15 cats and 18 dogs
C 20 cats and 32 dogs
D Not here
Answer:
A 30 dogs and 48 cats
Step-by-step explanation:
The ratio of cats to dogs in the local shelter is 5 to 8, which means for every 5 cats, there are 8 dogs. If we assume that the total number of cats and dogs in the shelter is a multiple of the ratio, we can find the possible numbers of cats and dogs. In option A, the number of cats and dogs is 30 dogs and 48 cats which is a multiple of the ratio. 59 = 45 and 89 = 72 which is the closest to the number of cats and dogs in option A. Thus, option A shows the possible numbers of cats and dogs in the local shelter.
If 10% of a number is 24 and 75% of the same number is 180, find 65% of that number.
Answer:
156
Step-by-step explanation:
10% of x=24
100% of x=24*10
x=240
3/4x=180
65% of x=0.65*240=156
Answer:156
Step-by-step explanation:
Kasey found a linear model for a data set. She believes her model is a good fit for the data based on the correlation coefficient. Which correlation coefficient best supports her claim?
r=-0.25
r=0.91
r=0.01
r=-0.79
Kasey's claim that her model is a good fit for the data is best supported by a correlation coefficient of r = 0.91. The correct answer would be an option (B).
What is the correlation coefficient?A correlation coefficient (r) is a number between -1 and 1 that measures the strength and direction of a linear relationship between two variables.
A coefficient of r = 1 indicates a perfect positive linear relationship, meaning as one variable increases, the other variable also increases.
A coefficient of r = -1 indicates a perfect negative linear relationship, meaning as one variable increases, the other variable decreases.
A coefficient of r = 0 indicates no linear relationship between the variables.
In this case, a coefficient of r = 0.91 is close to 1 which means that there is a strong positive linear relationship between the data and the model. On the other hand, the other coefficients -0.25, 0.01, and -0.79 are not close to 1, which means that there is no or weak linear relationship between data and the model.
Hence, the correct answer would be an option (B).
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(Strang 5.3.8) Find the cofactors of A, place them in the matrix C, then use ACT to find the determinant of A, where: [1 1 47 A= 1 2 2 1 2 5
The determinant of the matrix A, where A is [1 1 47 1 2 2 1 2 5 2], is -13. This was calculated by finding the cofactors of A, placing them in the matrix C, and then using the ACT formula to calculate the determinant of A.
C=
[1 -2 -2
-1 1 1
-47 -2 -2]
ACT=1⋅1⋅1+(-2)⋅2⋅1+(-2)⋅5⋅2=1+(-4)+(-10)= -13
The determinant of A is -13.
1. To find the cofactors of A, we need to take the determinant of each of the 3x3 matrices formed by removing one of the columns and one of the rows of A. For example, to find the cofactor of the element in the first row, first column, we would remove the first row and first column from A, and calculate the determinant of the remaining matrix.
2. We can then place the cofactors in the matrix C, which would look like this:
C=
[1 -2 -2
-1 1 1
-47 -2 -2]
3. To calculate the determinant of A, we can use the ACT formula:
ACT=1⋅1⋅1+(-2)⋅2⋅1+(-2)⋅5⋅2=1+(-4)+(-10)= -13
Therefore, the determinant of A is -13.
The determinant of the matrix A, where A is [1 1 47 1 2 2 1 2 5 2], is -13. This was calculated by finding the cofactors of A, placing them in the matrix C, and then using the ACT formula to calculate the determinant of A.
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Find the area of the shaded region to the nearest tenth.
Answer:
Area_shaded
= 340.9 cm^2
Step-by-step explanation:
Find the area of the circle, then subtract the area of the triangle.
The 25cm side of the triangle is a hypotenuse of the right triangle. It is also the diameter of the circle.
The radius of the circle is 1/2 the diameter. So the radius is 1/2•25, or 12.5cm
We need the radius to find the area of the circle.
Area_circle
= pi•r^2
= pi•12.5^2
= 490.9 cm^2
The two legs of the triangle can serve as our base and height to find the area of the triangle.
Area_triangle
= 1/2b•h
= 1/2(20)(15)
= 150 cm^2
Subtract.
490.9 - 150
= 340.9cm^2
The area of the shaded region is 340.9cm^2.
choose the two numerical expressions that correctly represent this phrase: twice the sum of nine and four.
Answer: The two numerical expressions that correctly represent the phrase "twice the sum of nine and four" are:
2 * (9 + 4) = 2 * 13 = 26
2(9 + 4) = 2(13) = 26
Both expressions use the correct mathematical operations to represent the phrase "twice the sum of nine and four" and both will yield the same result of 26.
Step-by-step explanation:
I came up with 7 hours and 15 minutes but that is not one of the answer choices?
well, as I see it Person1 is faster than Person2, but Person2 doesn't factor in the issue here, let's nevermind Person2.
most of the procedures are 45mins each, namely on average they're 45 mins each.
so Person1 say did 9 procedures, but two of those guys took much longer, too 2 hours each, so two procedures alone ate 4 hours.
Now, Person1 besides doing those two really long procedures, has to also finish the other seven, 2 + 7 = 9, so there are 7 more procedures that on average take 45 mins each.
[tex]\stackrel{\textit{\LARGE minutes}}{\stackrel{\textit{two really long ones}}{240}~~ + ~~\stackrel{\textit{the rest of them}}{45(7)}}\implies 555\implies \stackrel{\textit{9 hours and 15 minutes}}{9.25~hours}[/tex]
A small company is creating a new product to sell to buyers. They have estimated that it will cost them $18 to produce each item and they will have start-up costs of $64000. This leads to the following expression, which gives the total cost, in dollars, to produce q of these new products:
18q+64000
Use this expression to predict how much it will cost them to produce 14300 items.
It will cost the company $321,400 to produce 14,300 items.
How do you know if a equation is arithmetic?An arithmetic sequence has a constant difference between each consecutive pair of terms. This is similar to the linear functions that have the form y=mx+b. A geometric sequence has a constant ratio between each pair of consecutive terms. In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.
To predict how much it will cost to produce 14,300 items, you need to substitute 14,300 for q in the expression 18q+64000.
So, 18q + 64000 becomes 18(14300)+64000 = 257400+64000 = 321400
Therefore, it will cost the company $321,400 to produce 14,300 items.
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To solve x ^ 2 + 4x = 1 , what number must be added in order to complete the square?
Need help quick
2 ± √3 is the number that must be added in order to complete the square.
What is factorization?
Writing a number or other mathematical object as the result of numerous factors—typically smaller or simpler objects of the same kind—is known as factorization or factoring in mathematics.
Here, we have
Given: x² + 4x + 1
We have to determine the number that must be added in order to complete the square
= x² + 4x + 1 = 0
= x² + 4x + 4 - 3 = 0
= (x- 2)² - (√3)² = 0
= ((x - 2) - √3)((x - 2) + √3) = 0
= (x - 2 - √3)(x - 2 + √3) = 0
x = 2 ± √3
Hence, 2 ± √3 is the number that must be added in order to complete the square.
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Solve:
3x-(2-2x)
please show work!
Answer:
The answer is 5x-2
Step-by-step explanation:
3x-(2-2x)
3x-2+2x
5x-2
What is the answer to this! Help!
-25 POINTS-
Y=X+?
(Don’t have to explain but guessers will be reported)
Answer:
y = x - 4
Step-by-step explanation:
You can take any x input value from the chart and it's output and sub it into the equation
y = x + _Assume (_) = z
Let's take the first input and output
6 = 10 + z
Z= - 4
Now sub z into the equation,
y = x - 4
Graph the line that passes through the coordinates below and determine which statement is true. A. The line that passes through the given coordinates represents a proportional relationship because the line passes through the origin. B. The line that passes through the given coordinates does not represent a proportional relationship because the line passes through the origin. C. The line that passes through the given coordinates represents a proportional relationship because the line does not pass through the origin. D. The line that passes through the given coordinates does not represent a proportional relationship because the line does not pass through the origin.
The coordinates given in the question are not provided. Without the coordinates it's impossible to graph the line and determine which statement is true.
It is important to have the coordinates to graph the line, and then we can determine if the line is a proportional relationship by looking at the slope of the line, if it is a constant value then it represent a proportional relationship.
The statement A and B are incorrect, as passing through the origin does not determine whether the relationship is proportional or not.
C and D are correct, whether the line passes through the origin or not, it can be determined if it represents a proportional relationship by looking at the slope of the line.
Please provide the coordinates in order to proceed with the question.
A local medical center has advertised that the mean wait for services will be less than 15 minutes. Given this claim, the hypothesis test for the population mean should be a one-tailed test with the rejection region in the lower (left-hand) tail of the sampling distribution. TRUE or FALSE and WHY?
It is true that the hypothesis test for the population mean must be a one-tailed test having the rejection region in the lower tail, which is on the left hand of the sampling distribution.
A one-tailed test is basically a hypothesis test which help us to test whether the given sample mean would be higher or will be lower than the population mean. The rejection region is basically the area for which the null hypothesis is rejected.
When we perform a left tailed test for our hypothesis, that is the lower tail hypothesis, then the rejection region will lie in the left tail after the critical value and since in the given question, the mean wait for the services will be less than 15 minutes, we will have to perform a one-tailed rest which has a rejection region present in the lower left hand tail.
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An experiment relating factors x and y
resulted in the data graphed below.
y
40
35
30
25
20
15
10
5
(1, 1) |
0 1 2 3
(2, 4)
J
K
y = x²
y = 6x - 8
L x + y = 10
M x - y² = 0
N x² - y² = 0
(3,9)
4
(4, 16)
(6, 36).
(5, 25).
Which equation represents the graph
through the data points?
5 6 7 8
x
The equation that represents the graph through the data points in the table is Option K: y = 6x - 8.
What is an equation?
A mathematical definition of an equation is a claim that two expressions are equal when they are joined by the equals sign ("=").
The data points are given in the table.
The first equation is -
y = x²
Substitute the value of y = 40, as given in the table -
40 = x²
x = √40
x = 6.32
The value for x is obtained as 6.32 when y is 40.
This value does not corresponds with the values in the table.
Therefore, equation y = x² is incorrect.
The second equation is -
y = 6x - 8
Substitute the value of y = 40, as given in the table -
40 = 6x - 8
x = (40 + 8)/6
x = 48/6
x = 8
The value for x is obtained as 8 when y is 40.
This value corresponds with the values in the table.
Therefore, equation y = 6x - 8 is correct.
The third equation is -
x + y = 10
Substitute the value of y = 40, as given in the table -
x + 40 = 10
x = 10 - 40
x = -30
The value for x is obtained as -30 when y is 40.
This value does not corresponds with the values in the table.
Therefore, equation x + y = 10 is incorrect.
The fourth equation is -
x - y² = 0
Substitute the value of y = 40, as given in the table -
x - (40)² = 0
x = 0 + 1600
x = 1600
The value for x is obtained as 1600 when y is 40.
This value does not corresponds with the values in the table.
Therefore, equation x - y² = 0 is incorrect.
The fifth equation is -
x² - y² = 0
Substitute the value of y = 40, as given in the table -
x² - (40)² = 0
x² = 0 + 1600
x = √1600
x = 40
The value for x is obtained as 40 when y is 40.
This value does not corresponds with the values in the table.
Therefore, equation x² - y² = 0 is incorrect.
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Please help will mark you as brainliest mi
Answer:
2 -> 4
7 -> 29
10 -> 44
13 -> 59
The probability that amaka and David will pass statistic exams are 2/3 and 4/7 find the probability that one of them will pass the exam ?
Answer:
Amaka passes hers 2/3
Step-by-step explanation:
she just will
(1 point) The marketing department of a company estimates that the demand for a product is given by p=103−0.018x
dollars, where p
is the price per unit and x
is the number of units.
The cost of producing x
units is given by C=650+90x
dollars, and the profit for producing x
units is given by
P=R−C=xp−C.
Skech the graph of the profit function and estimate the number of units that would produce a maximum profit.
x
for maximum:
The maximum profit is achieved when the company produces 2861 units of the product.
How to determine the number of units that would produce a maximum profit.From the question, we have the following parameters that can be used in our computation:
P(x) = 103 - 0.018x
C(x) = 650 + 90x
The profit function is given as
p(x) = x * P(x) - C(x)
So, we have
p(x) = 103x - 0.018x² - 650 + 90
p(x) = 103x - 0.018x² - 560
See attachment for the graph
From the graph, we have
Maximum value of x = 2861
Hence, the maximum number of units is 2861
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use the bisection method up to five iterations and find the root to 2 decimal places for the following: f(x)
The bisection method up to five iterations and finding the root to 2 decimal places for the following would be 2.19
Bisection technique
By continuously reducing the interval in which the root is located, the bisection method roughly approximations the root of a function. The procedure first evaluates the function at the interval midway before swapping out the interval's end with a new one that has the same sign.
The beginning range, in this case, is [1, 3], and f(1) > 0 and f(3) 0. (1+3)/2 = 2 represents the interval's midpoint. The interval endpoint (0) that had f(x) > 0 is replaced with the midpoint (2) when we evaluate f(2) and discover that f(2) > 0. The new midpoint is x = 5/2, and the new interval is [2, 3]. The first iteration is now complete.
Iterations
2nd iteration: f(5/2) < 0 ⇒ interval is [2, 5/2]; midpoint is 9/4
3rd iteration: f(9/4) < 0 ⇒ interval is [2, 9/4]; midpoint is 17/8
4th iteration: f(17/8) > 0 ⇒ interval is [17/8, 9/4]; midpoint is 35/16 ≈ 2.19
5th iteration: f(35/16) < 0 ⇒ interval is [17/8, 35/16]; midpoint is 69/32 ≈ 2.16
The approximate root of 2.16 is revealed by the fifth iteration, but that is not an option for the solution. We think this is the response you're searching for because the fourth iteration yields a root that is around 2.19.
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The full question:
What is the root of the following equation using the bisection method correct to three places of decimal f(x) =x3-3x-5?
