You read online that a 15 ft by 20 ft brick patio would cost about $2,275 to have professionally installed. Estimate the cost of having a 13 by 18 ft brick patio installed.
$
Round your answer to the nearest dollar.
Answer: $1,775
Step-by-step explanation:
We can use a proportion to estimate the cost of having a 13 ft by 18 ft brick patio installed, based on the cost of a 15 ft by 20 ft patio:
(cost of 13 ft by 18 ft patio) / (cost of 15 ft by 20 ft patio) = (area of 13 ft by 18 ft patio) / (area of 15 ft by 20 ft patio)
The area of the 13 ft by 18 ft patio is 13 x 18 = 234 sq ft, and the area of the 15 ft by 20 ft patio is 15 x 20 = 300 sq ft.
So,
(cost of 13 ft by 18 ft patio) / ($2,275) = 234 / 300
Solving for the cost of the 13 ft by 18 ft patio, we get:
cost of 13 ft by 18 ft patio = ($2,275) x (234 / 300) = $1,775.25
Rounding to the nearest dollar, the estimated cost of having a 13 ft by 18 ft brick patio installed is $1,775.
let f be the function that satisfies the given differential equation. write an equation for the tangent line to the curve y
The equation for the tangent line to the curve y = f(x) that passes through the point (1,1) is y = (x + 1)/2. Using this equation, we can estimate the value of f(1.2) to be approximately 1.1.
To find the equation for the tangent line to the curve y = f(x) that passes through the point (1,1), we first need to find the derivative of y with respect to x, which is given by:
dy/dx = xy/2
Next, we can use the point-slope form of the equation of a line to write the equation for the tangent line:
y - 1 = (x - 1)(dy/dx at (1,1))
dy/dx at (1,1) = (1*1)/2 = 1/2
y - 1 = (x - 1)(1/2)
2y - 2 = x - 1
2y - x = 1
y = (x + 1)/2
Therefore, the equation for the tangent line to the curve y = f(x) that passes through the point (1,1) is y = (x + 1)/2 .
To estimate the value of f(1.2), we can use the equation of the tangent line we just found:
y = (x + 1)/2
At x = 1.2, the value of y can be estimated by substituting x = 1.2 into the equation of the tangent line:
y = (1.2 + 1)/2
y = 2.2/2
y = 1.1
Therefore, using the equation of the tangent line, we can estimate the value of f(1.2) to be approximately 1.1.
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--The question is incomplete, answering to the question below--
"let f be the function that satisfies the given differential equation dy/dx = xy/2. write an equation for the tangent line to the curve y = f(x) that pass through the point (1,1). Then use your tangent equation to estimate value of f(1.2)"
Gladtown School hosted Game Night
for students and their families. A total
of 240 people attended.
There were 16 tables set up in the school
cafeteria for the event. Every table had
the same number of people. How many
people sat at each table?
Answer:
15 people at each table
Step-by-step explanation:
1) divide total number of people by number of tables
240/16
2) solve
15 people at each table
Solve the following equations. Show your complete solutions.
A.
1)x+7=18
2)x-13 15
3) 8x=64
4)5x-13-12
I need a complex solution
And pls can u not simplyfy it
Answer:
1. x = 11
Step-by-step explanation:
1. x + 7 = 18
move 7 to right then change the sign
x = 18 - 7
x = 11
2. x - 13 = 15
move -13 to right then change the sign
x = 15 + 13
x = 28
3. 8x = 64
8 8
divided by 8 both side
x = 8
4. 5x-13-12=0 it this the correct given?
add same variable
5x = 13 + 12
5x = 25
5 5
divided by 5 both side
x = 5
Between which two consecutive integers does [tex]\sqrt138[/tex]lie?
The square root of 138 lies between 11 and 12, as 11²=121 and 12²=144.
What is number?Number is a mathematical object used to count, measure, and label. Numbers are used in almost every field of mathematics and science, including algebra, calculus, geometry, physics, and computer science. Numbers can also be used to represent data, such as population, income, temperature, or time. In addition, numbers are used to represent abstract concepts, such as love, truth, beauty, and justice.
This is because the square root of a number is the number that, when multiplied by itself, produces the original number. Therefore, to find the square root of 138, we need to identify two consecutive integers such that one of them squared is smaller than 138 and the other squared is larger than 138.
To do this, we can work our way up from the integer closer to 0, in this case 11. 11 squared is 121, which is smaller than 138, so we know that the square root of 138 must be between 11 and a larger integer. Then, if we square 12, we get 144, which is larger than 138. Therefore, we can definitively say that the square root of 138 lies between 11 and 12.
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The square root of 138 lies between 11 and 12, as 11² is 121 and 12² is 144.
What is number?Number is a mathematical object used to count, measure, and label. Numbers are used in almost every field of mathematics and science, including algebra, calculus, geometry, physics, and computer science. Numbers can also be used to represent data, such as population, income, temperature, or time. In addition, numbers are used to represent abstract concepts, such as love, truth, beauty, and justice.
To calculate this, we can divide 138 by 11 and 12, and see which integer is closer to the answer.
138 divided by 11 is 12.545454545454545454545454545455.
138 divided by 12 is 11.5.
Since 11.5 is closer to the answer, the square root of 138 lies between 11 and 12.
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Next > Pretest: Essential Learning 13 Select the correct answer. What is the simplified form of this expression? (5x² + 2x + 11) − (7 + 4x - 2x²)
Answer:
7x² - 2x + 4
Explanation:
(5x² + 2x + 11) − (7 + 4x - 2x²)
= 5x² + 2x + 11 - 7 - 4x + 2x²
= 7x² + 2x + 11 - 7 - 4x
= 7x² - 2x + 11 - 7
= 7x² - 2x + 4
So, the answer is 7x² - 2x + 4
Find the length of the hypotenuse in a right triangle with the following two side lengths.
a = 10, b = 24, c = ?
1. c = 26
2. c = 27
3. c = 28
4. c = 29
Answer:
4-. c = ±26
Step-by-step explanation:
c² = a² + b²
c² = 10² + 24²
c² = 100 + 576
c² = 676
√c² = √676
c = ± 26
Find the algebraic expression which connects the two letters in the table below:
Answer:
{(0,3),(1,2),(2,1),(3,0),4,-1)}
Step-by-step explanation:
{(0,3),(1,2),(2,1),(3,0),4,-1)}
x y
0 3
1 2
2 1
3 0
4 -1
1. If the angle between the vectors a and b is π/4 and | a × b | = 1, then a. b is equal to
Answer:
We can use the formula |a × b| = |a| |b| sin θ to solve for the magnitude of the cross product |a × b|, where θ is the angle between vectors a and b. In this case, we have |a × b| = 1 and θ = π/4, so we can write:
1 = |a| |b| sin(π/4)
Simplifying, we have:
|a| |b| = √2
Now, we need to find the dot product a · b. We know that:
a · b = |a| |b| cos θ
where θ is the angle between vectors a and b. Since we're given the angle between a and b, we can substitute θ = π/4 and use the value we found for |a| |b|:
a · b = (√2) cos(π/4) = (√2)/2
Therefore, a · b is equal to (√2)/2.
Step-by-step explanation:
PLEASE HELP !
Use the figure below to answer the questions
From the figure 1. Two line segments are LA and EP. 2. Two rays are EC and AH. 3. Two lines are b and AP.
What are rays, line segment and line?A ray is a segment of a line with a single endpoint and unlimited length in a single direction. A ray cannot be measured in terms of length.
The ends of a line segment are two. These endpoints are included, along with every point on the line that connects them. A segment's length can be measured, while a line's length cannot.
A line is a collection of points that extends in two opposing directions and is endlessly long and thin.
From the given figure we observe that,
1. Two line segments are LA and EP.
2. Two rays are EC and AH.
3. Two lines are b and AP.
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a circle has a radius of 10 cm, find the perimeter
Answer:
The perimeter of a circle is also known as the circumference. The formula for the circumference of a circle is:
C = 2πr
where C is the circumference, π is a constant approximately equal to 3.14, and r is the radius of the circle.
Substituting the given value, we get:
C = 2 x 3.14 x 10
C = 62.8 cm
Therefore, the perimeter of the circle is 62.8 cm.
What is the smallest possible average of five distinct positive even integers?
A. 10
B. 8
C. 6
D. 4
E. 0
Answer:
The smallest possible average of five distinct positive even integers will occur if we choose the five smallest even integers. Since we want the integers to be distinct, we start with 2 and add the next four even integers:
2, 4, 6, 8, 10
The average of these five integers is:
(2 + 4 + 6 + 8 + 10) / 5 = 30 / 5 = 6
Therefore, the smallest possible average of five distinct positive even integers is 6, which is answer choice C.
Suppose that, for budget planning purposes, the city in Exercise 24 needs a better estimate of the mean daily income from parking fees.
a) Someone suggests that the city use its data to create a confidence interval instead of the interval first created. How would this interval be better for the city? (You need not actually create the new interval.)
b) How would the interval be worse for the planners?
c) How could they achieve an interval estimate that would better serve their planning needs?
d) How many days' worth of data should they collect to have confidence of estimating the true mean to within
a) As per the given budget, the amount of interval that would be better for the city is 95% confidence interval.
b) The interval that be worse for the planners is depends on sample size
c) They achieve an interval estimate that would better serve their planning needs is depends on margin of error
d) The number of days worth of data should they collect to have confidence of estimating the true mean to 30 days
To obtain a better estimate, the city can create a confidence interval, which is a range of values that is likely to contain the true population mean with a certain degree of confidence.
However, there are also some disadvantages to using a confidence interval. The interval estimate may be wider than a point estimate, which means that the budget planners may have to allocate a larger budget to account for the uncertainty in the estimate.
To achieve a better interval estimate, the city could increase the sample size or reduce the variability of the data. Increasing the sample size reduces the margin of error and increases the precision of the estimate.
Finally, to determine how many days' worth of data the city should collect to estimate the true mean with a certain degree of confidence, the city would need to consider the desired level of precision, the variability of the data, and the desired level of confidence.
Typically, a larger sample size will provide a more accurate estimate, but this also depends on the variability of the data. In general, a sample size of at least 30 is recommended for a reasonably accurate estimate.
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Let f(X)=x-8 and g(X) =4x^2. Perform the function operation and then find the domain of the result. (f-g)(x)
Answer:
(f - g)(x) = -4x² + x - 8
Step-by-step explanation:
(f - g)(x) = f(x) - g(x)
= x - 8 - (4x²)
= -4x² + x - 8
one ticket is drawn at random from each of the two boxes below: 1 2 6 1 4 5 8 find the chance that the both numbers are even numbers.
The chance that both numbers drawn are even numbers is 8/21.
The probability refers to the measure of the likelihood or chance of an event occurring. It is a numerical value between 0 and 1, where 0 indicates that the event is impossible, and 1 indicates that the event is certain.
There are 4 even numbers and 3 odd numbers in the first box, and 2 even numbers and 1 odd number in the second box.
The probability of drawing an even number from the first box is 4/7, and the probability of drawing an even number from the second box is 2/3.
By the multiplication rule of probability, the probability of drawing an even number from both boxes is
(4/7) × (2/3) = 8/21
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evaluate the function h(x)=-2x^4+x^2-13;x=y+1
The function[tex]h(x) = -2x^4 + x^2 - 13; x = y+1,[/tex] can be simplified as [tex]h(y+1) = -2y^4 - 8y^3 - 10y^2 - 8y - 14.[/tex]
What exactly are function and example?A function is a type of rule that produces one output for a single input. Source of the image: Alex Federspiel. This is illustrated by the equation y=x2. Any input for x results in a single output for y. Considering that x is the input value, we would state that y is a function of x.
To evaluate the function[tex]h(x) = -2x^4 + x^2 - 13[/tex] when x = y + 1, we can substitute y + 1 for x:
[tex]h(y+1) = -2(y+1)^4 + (y+1)^2 - 13[/tex]
Simplifying this expression involves some algebraic manipulation. We can start by expanding the fourth power using the binomial theorem:
[tex](y+1)^4 = y^4 + 4y^3 + 6y^2 + 4y + 1[/tex]
Substituting this expression into h(y+1), we get:
[tex]h(y+1) = -2(y^4 + 4y^3 + 6y^2 + 4y + 1) + (y^2 + 2y + 1) - 13[/tex]
Simplifying further, we get:
[tex]h(y+1) = -2y^4 - 8y^3 - 10y^2 - 8y - 14[/tex]
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A farmer needs to water a new potato field. To do so, he builds an irrigation system using 124 plastic pipes and 97 metal pipes. How many pipes does he use?
Answer:
The farmer uses 221 pipes in total: 124 plastic pipes and 97 metal pipes.
Answer:
To find out how many pipes the farmer used in total, we simply add the number of plastic pipes to the number of metal pipes:
Total pipes = Plastic pipes + Metal pipes
Total pipes = 124 + 97
Total pipes = 221
Therefore, the farmer used a total of 221 pipes for the irrigation system.
Solve for x. Pls help
value of variable x in the triangle is 8.
Define Triangle Proportionality TheoremThe Triangle Proportionality Theorem, also known as the Side-Splitter Theorem, states that if a line is parallel to one side of a triangle and intersects the other two sides, then it divides those sides proportionally. In other words, if a line is drawn parallel to one side of a triangle, and intersects the other two sides, then the ratio of the lengths of the line segments it creates on those sides is equal.
More formally, let ABC be a triangle, and let D be a point on the line segment BC that is between B and C. If the line through D parallel to AB intersects AC at point E, then BD/DC = AE/EC. This theorem is useful in many geometrical proofs and can be used to solve problems involving similar triangles.
According to Triangle Proportionality Theorem
4x-7/5=20/4
4x-7=5×5
4x=32
x=8
Hence, value of variable x in the triangle is 8.
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NEED HELP ASAP 10 PONTS!!! please help me find the area and the perimeter!!!! i beg you at this point.
Answer: Area = 113.14 ft sq. Perimeter =
Step-by-step explanation:
break down the figure and solve area and perimeter for each
triangle = A = 1/2bh
A = 1/2 (8) (6)
A = 24 ft sq.
square = A = LW
A = (8) (8)
A = 64 ft sq
semi circle = A = 1/2 TT r^2
A = 1/2 (3.14) (4)^2
A = 1/2 (3.14) (16)
A = approximately 25.14 ft sq
rounded to hundredths
total AREA = 24 + 64 + 25.14 = 113.14
now we can find perimeter by breaking down the figures again
triangle
we know one leg is 6 ft and the other is 8 ft
we need to find the hypoteneuse using Pythagorean theorem.
a^2 + b^2 = c^2
6^2 = 8^2 = c^2
36 + 64 = c^2
100 = c^2
√100 = √c^2
10 ft = c
square
given two sides are 8ft and 8ft
semi circle - P is the same as circumference
P = ( 1/2 ) 2 π r
P = (1/2) (2) (3.14) (4)
P = 12.56
total PERIMETER = 12.56 + 8 + 8 + 6 + 10 = 44.56 ft
i attached a print screen showing my breakdowns
Tom’s yearly salary is $78000
Calculate Tom’s fortnightly income. (Use 26
fortnights in a year.)
Fortnightly income =
$
Tom's fortnightly income is $3000.
What is average?In mathematics, an average is a measure that represents the central or typical value of a set of numbers. There are several types of averages commonly used, including the mean, median, and mode.
To calculate Tom's fortnightly income, we need to divide his yearly salary by the number of fortnights in a year:
Fortnightly income = Yearly salary / Number of fortnights in a year
Fortnightly income = $78000 / 26 = $3000
Therefore, Tom's fortnightly income is $3000.
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question - Calculate the Tom's fortnightly income and yearly salary by the number of fortnights in a year .
A pollster recorded the size of households in his
area. The table below shows the distribution for
820 families. How many of the 820 families has at
least 3 people in the household?
Number of people in
a household
1
2
3
4
5
6 or more
% of Households
27%
33%
24%
10%
4%
2%
✩
Step 1: Calculate the number of families with 1 person in the household by multiplying the percentage (27%) and the total number of families (820) - 27% x 820 = 220.4.
Step 2: Calculate the number of families with 2 people in the household by multiplying the percentage (33%) and the total number of families (820) - 33% x 820 = 271.6.
Step 3: Calculate the number of families with 3 people in the household by multiplying the percentage (24%) and the total number of families (820) - 24% x 820 = 196.8.
Step 4: Calculate the number of families with 4 people in the household by multiplying the percentage (10%) and the total number of families (820) - 10% x 820 = 82.
Step 5: Calculate the number of families with 5 people in the household by multiplying the percentage (4%) and the total number of families (820) - 4% x 820 = 32.8.
Step 6: Calculate the number of families with 6 or more people in the household by multiplying the percentage (2%) and the total number of families (820) - 2% x 820 = 16.4.
Step 7: Add the numbers calculated in Steps 1 - 6 to get the total number of families with at least 3 people in the household - 220.4 + 271.6 + 196.8
Use the drop-down menus and enter values to complete the statements below.
An equation is a statement that two expressions are equal. The expressions on both sides of the equation can be made up of variables, constants, and mathematical operations.
What is the expression of an equation?For example, the equation:
[tex]2x + 5 = 11[/tex]
Has two expressions on either side of the equals sign. The expression on the left side is 2x + 5, which consists of the variable x, the constant 2, and the constant 5, combined using the mathematical operation of addition.
The expression on the right side is 11, which is a constant. The equation states that the two expressions are equal, which means that the value of x can be determined to be 3 by solving the equation.
Part A:
The value for x that is a solution to [tex]2x - 5 = 3 is x = 4.[/tex]
The value for x that is a solution to [tex]2x - 5 > 3[/tex] is [tex]x > 4[/tex] .
Part B:
The solution to [tex]-2x - 5 = 3[/tex] is [tex]x = -4[/tex] .
The solution to [tex]-2x - 5 > 3[/tex] is [tex]x < -4[/tex] .
A value for x that is a solution to [tex]-2x - 5 = 3[/tex] is [tex]x = -4[/tex] .
A value for x that is a solution to [tex]-2x - 5 > 3[/tex] is [tex]x = -5[/tex] .
Therefore, The value for x that is a solution to [tex]2x - 5 > 3[/tex] is [tex]x > 4[/tex] . and A value for x that is a solution to [tex]-2x - 5 > 3[/tex] is [tex]x = -5[/tex] .
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1//3 x 3.14 x 16^2 x 10
Answer:
[tex]2679\frac{7}{15}[/tex]
Step-by-step explanation:
[tex]\frac{1}{3}\times 3.14\times 16^2 \times 10[/tex]
First thing we need to do is to evaluate 16^2.
[tex]16^2 = 16\times 16 =256[/tex]
Now, because multiplication is an associative and communitative property, the order that we multiply won't matter. I will rearrange terms to multiply in a more easier way, left to right.
[tex]\frac{1}{3}\times 10\times 256\times 3.14[/tex]
Lets multiply the fraction first. Multiply across, divide 10 by 3. 3R1 gives us:
[tex]3\frac{1}{3} \times 256 \times 3.14[/tex]
Now lets multiply 256. Same method as before.
[tex]853\frac{1}{3}\times 3.14[/tex]
Now, finally, the decimal. Lets convert it to a fraction.
[tex]3.14=\frac{314}{100}[/tex]
Now, replace the decimal in the expression.
[tex]853\frac{1}{3}\times \frac{314}{100}[/tex]
Same method as before. Through rigorous simplifying, we get:
[tex]2679\frac{7}{15}[/tex]
The sun of two numbers is $189 and the difference is 15. What are the two numbers?
Answer:
102 and 87
Step-by-step explanation:
Let the two numbers be x and y.
x+y = 189
x-y =15
Add the two equations together.
x+y = 189
x-y =15
-------------------
2x =204
2x/2 = 204/2
x = 102
Now we can find y.
x+y = 189
102+y =189
y = 189-102
y =87
Need help finding the total amount
Question attached below, thanks!
The total amount payable at the end of the loan is Option 1: $369817.20 and Option 2: $233607.60.
APR: What is it?APR, which stands for Annual Percentage Rate, refers to the yearly interest rate that is applied to loans. APR takes into account not just the interest rate but also any other expenditures or expenses related to the loan, including points or closing costs. APR offers a uniform approach to assess the costs and benefits of various lending solutions. Lenders are required by law to provide borrowers with the APR of a loan so they may make educated judgements about their borrowing alternatives.
The total payment for the loan is the monthly amount paid over the course of loan.
For option 1 the number of months are:
n = 30 (12) = 360
The total payable amount is:
$1027.27 (360) = $369817.20
For option 2 the number of months are:
n = 15 (12) = 180
The total payable amount is:
$1297.82 (180) = $233607.60
Hence, the total amount payable at the end of the loan is Option 1: $369817.20 and Option 2: $233607.60.
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Please help me answer part 1, part 2, and part 3 question ASAP!!
Will mark as brainliest if correct and 50+ points!
Answer:
Step-by-step explanation:
Section 1
1: 2x + 20
2. 8x - 49
3: 7x + 21
4.8x - 4
5. 15x + 5
6. 12x + 15
7. 20x - 50
8. 21x + 14
9. 24x - 6
10. 45x - 18
11. 18x - 8
12. 30x + 9
13. 24x + 36
14. 25x - 20
15. 14x - 63
16. 32x + 20
17. 24x - 10
18. 42x - 18
19. 24x - 80
20. 48x - 32
Estimate the product. Then find each product 2 1/6 x 4 1/2
Answer: The estimated product is about 10.
Step-by-step explanation:
To estimate the product, we can round 2 1/6 to 2 and 4 1/2 to 5. Then, we multiply 2 x 5 to get an estimated product of 10.
To find the exact product, we can use the following steps to multiply the two mixed numbers:
Convert each mixed number to an improper fraction:
2 1/6 = 13/6
4 1/2 = 9/2
Multiply the two fractions:
(13/6) x (9/2) = (13 x 9) / (6 x 2) = 117/12
Simplify the fraction, if possible:
117/12 = 9 3/4
Therefore, the exact product of 2 1/6 x 4 1/2 is 9 3/4.
find the smallest value of n that you can for which s n has an element of order greater than or equal to 100
The value of n that yields the smallest S_n element having an order of at least 100 is 101.
To find the minimum value of n for which the set S_n contains an element with an order equal to or greater than 100, the formula S_n = n!/r!(n-r)! can be used. This formula calculates the number of permutations in a set with n elements, where r elements are chosen at a time. By substituting r=100 into the formula, it is determined that n must be at least 101 to contain an element with an order of 100 or greater. Therefore, the smallest value of n for which S_n contains an element with an order of 100 or greater is 101.
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Complete question:
Find the smallest value of n that you can for which S_n has an element of order greater than or equal to 100
Zeros: −9, multiplicity 1; −1, multiplicity 2; degree 3
Form a polynomial whose zeros and degree are given.
Answer:
Step-by-step explanation:
If the zeros and their multiplicities are given, we can write the polynomial as the product of linear factors corresponding to each zero.
For this problem, the polynomial has zeros of -9 (multiplicity 1) and -1 (multiplicity 2), so the linear factors are:
(x + 9) and (x + 1)^2
To find the third factor, we use the fact that the degree of the polynomial is 3. We can multiply the linear factors together and then simplify:
(x + 9)(x + 1)^2 = (x^2 + 10x + 9)(x + 1)
= x^3 + 11x^2 + 19x + 9
Therefore, the polynomial with zeros of -9 (multiplicity 1), -1 (multiplicity 2), and degree 3 is:
f(x) = x^3 + 11x^2 + 19x + 9
PLEASE HELP ME ON THIS QUESTION
Therefore , the solution of the given problem of unitary method comes out to be A, B, C, and D should be replaced by the frequencies 4, 5, 1, and 2 correspondingly.
An unitary method is what?It is possible to achieve the goal by utilizing already known variables, this widespread convenience, or all crucial elements from the first bishop malleable research that followed a particular methodology. Both vital components will surely miss the statement if the term assertion result does not occur; if it does, it will then be able to contact the entity once more.
Here,
Since two more people were asked, we need to add their responses to the tally and update the table:
Color Tally Frequency
Red IIII 4
Orange II 2
Yellow IIII 4
Green III 3
Blue IIII 4
Indigo I 1
Violet II 2
Unknown AAB 2
Since "Blue" and "Green," the two new responses, are not among the initial colors in the table, we can add them to the "Unknown" category. The revised total for "Unknown" is therefore AABBG.
Counting the tallies, we can update the frequency column:
Color Tally Frequency
Red IIII 4
Orange II 2
Yellow IIII 4
Green IIII 4
Blue IIIII 5
Indigo I 1
Violet II 2
Unknown AABBG 5
In the finished table, A, B, C, and D should be replaced by the frequencies 4, 5, 1, and 2 correspondingly.
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