I need to show my work please help

The successfullly completed the proof of the cancellation property of vector addition.

Complete proof of the cancellation property of vector addition:Let u, v, and w be vectors in a vector space V such that u + w = v + w. We have to show that u = v.  We know that the cancellation property of vector addition states that for all vectors u, v, and w in a vector space V, if u + w = v + w, then u = v.So, u + w = v + w can be written as, u + w - w = v + w - w, applying subtraction on both sides.u + 0 = v + 0 (as - w + w = 0)0 is an additive identity, so it can be dropped off.u = v, which is the desired result.The statement "u + w = v + w" was given, and we have shown that it implies that "u = v". Hence, we have successfully completed the proof of the cancellation property of vector addition.

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We can reduce the width of the confidence interval by increasing the sample size, reducing the confidence level and decreasing the mean (A, D, and F)

A confidence interval is an estimate of the interval that has a specified probability of including an unknown population parameter.

The purpose of a confidence interval is to estimate the true value of the population parameter being measured, such as a mean, a standard deviation, or a proportion.

In general, a wider confidence interval indicates more uncertainty about the estimate, while a narrower confidence interval suggests more precision in the estimate.

We want narrower confidence intervals to demonstrate more precision, as this allows us to draw more reliable conclusions about population parameters.

We cannot reduce the width of the confidence interval by increasing the sample size, increasing the confidence level or increasing the mean.

Thus, the correct options are a, d, and f.

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Answer:

Step-by-step explanation:

To factor the left side of the equation, we can first factor out the common factor of (n+8):

n7(n + 8) - 4(n + 8) = (n + 8)(n7 - 4)

So the complete factored form of the expression is (n + 8)(n7 - 4).

Answer: 3.2.1. Money, goods, services, and factors of production flow between Jacob's Pet Shop, consumers, and the government as follows:

Money flows from consumers to Jacob's Pet Shop when they purchase pet food and accessories, and from Jacob's Pet Shop to the government in the form of taxes.

Goods and services flow from Jacob's Pet Shop to consumers when they purchase pet food and accessories, and from the government to Jacob's Pet Shop in the form of contracts or grants for the delivery service.

Factors of production flow from Jacob's Pet Shop to the economy in the form of employment opportunities for the shop manager, shop assistants, and driver, and from the economy to Jacob's Pet Shop in the form of raw materials and supplies for the business.

3.2.2. The diagram below illustrates the flow of money, goods and services, and factors of production between Jacob's Pet Shop, consumers, and the government:

               +--------------------+

               |                    |

               |     Consumers      |

               |                    |

               +--------+-----------+

                        | Purchase pet food and accessories

               +--------v-----------+

               |                      |

               | Jacob's Pet Shop     |

               |                      |

               +-------+--------------+

                       | Sell pet food and accessories

                       |

             +---------v-----------+

             |                     |

             |      Government      |

             |                     |

             +---------------------+

3.3. Two features that a closed economy will prohibit are:

International trade: A closed economy does not engage in trade with other countries. All economic activity is confined within the borders of the country.

Movement of capital: A closed economy does not allow the free movement of capital, such as investments or loans, in and out of the country. All capital transactions are restricted within the economy.

was this worth 5 points no way.

Step-by-step explanation:

Answer:

x² - 49

Step-by-step explanation:

(x - 7)² =

(x - 7) * (x - 7) =

x * x - 7 * 7 =

x² - 49

As a result, segment AE's length matches that of pentagons ABCDE and A'B'C'D'E'. Even as length of AE is not explicitly stated, we are unable to infer it based on the information in the problem.

The scale factor refers to the proportion of one figure's side length to the other figure's corresponding side length. This time, XYUV=123=4. The scaling factor is hence 4.

Each side of the pentagon A'B'C'D'E' is twice as long as the equivalent side of the pentagon ABCDE because the dilatation scale factor is 2. Therefore:

A'B' = 2AB

B'C' = 2BC

C'D' = 2CD

D'E' = 2DE

E'A' = 2EA

Segment AE, which adds up to the sum of the first pentagon's two sides, needs to be as long as possible.

AB + BC + CD + DE=AE

We can swap the value of A'B', B'C', C'D', and D'E' for AB, BC, CD, and DE, respectively, since the dilation scale factor is 2:

AE = A'B'/2 + B'C'/2 + C'D'/2 + D'E'/2

AE = (2AB)/2 + (2BC)/2 + (2CD)/2 + (2DE)/2

AB + BC + CD + DE=AE

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Answer:

2x - 13

Step-by-step explanation:

If x represents the greater number, then the other number is x - 13. The sum of these two numbers is:

x + (x - 13) = 2x - 13

The value of y when x=36 is 31/3.

According to the question,

x varies directly with 3y+5

Thus,

[tex]x = k(3y+5)[/tex]

where K is any positive integer.

Now, from the question,

y=5/3 when x=10

Thus,

[tex]10 = k(3(\frac{5}{3} )+5)\\10 = k(10)\\k = 1[/tex]

Now we can use k to find the value of y when x=36:

[tex]36 = 1(3y+5)\\31 = 3y\\y = \frac{31}{3}[/tex]

In mathematics, an integer is a whole number that can be positive, negative, or zero. Integers are a fundamental concept in number theory and are used in a variety of applications across many fields. Integers can be represented using the symbol "Z" and are denoted by an integer value like -3, 0, 1, 2, 3, etc. They are used to count and measure quantities in real-life situations, such as the number of apples in a basket or the distance between two cities.

Integers are closed under addition, subtraction, and multiplication, meaning that if you add, subtract, or multiply any two integers, the result will also be an integer. However, the division is not always closed under integers, as dividing by zero is undefined, and dividing two integers can result in a non-integer value.

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Complete Question:

If x varies directly with 3y+5 and y=5/3 when x=10, then what is the value of y when x=36

A. deposit $735.03 one year from now. B. $210.48 for each of the four years. C. choose the lump sum of $750 from your father. D. Interest rate of 7.4% compounded annually. E. Interest rate of 12%.

a. To have a balance of $1,000 four years from now, you need to calculate the present value of this amount. Using the compound interest formula, we can calculate that you need to deposit $735.03 one year from now to have a balance of $1,000 four years from now.

b. If you want to make equal payments at Years 1 through 4 to accumulate the $1,000, you can use the annuity formula to calculate the required payments. The formula gives us a payment of $210.48 for each of the four years.

c. If your father were to offer either to make the payments calculated in part b or to give you a lump sum of $750 one year from now, you can compare the present value of both options. The present value of the four payments of $210.48 each, using an 8% annual interest rate, is $682.96. Therefore, you would choose the lump sum of $750 from your father.

d. If you have only $750 one year from now, you can use the compound interest formula to calculate the interest rate you need to earn to have $1,000 four years from now. Using the formula, we get an interest rate of 7.4% compounded annually.

e. If you can only deposit $186.29 each at Years 1 through 4, you can use the compound interest formula to calculate the interest rate you need to earn to have $1,000 four years from now. Using the formula, we get an interest rate of 12% compounded annually.

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Complete question:

Assume that 4 years from now you will need $1,000. Your bank compounds interest at an 8% annual rate.

a. How much must you deposit 1 year from now to have a balance of $1,000 4 years from now?

b. If you want to make equal payments at Years 1 through 4 to accumulate the $1,000, how much each of the 4 payments be?

c. If your father were to offer either to make the payments calculated in part b or to give you a lump sum of $750 1 year from now, which would you choose?

d. If you have only $750 1 year from now, what interest rate, compounded annually, would you have to earn to have the necessary $1,000 4 years from now? 7.4%

e. Suppose you can deposit only $186.29 each at Years 1 through 4, but you still need $1,000 at Year 4. What interest rate, with annual compounding, must you seek out to achieve your goal?

Answer: The weight of the Apples is 160g

Step-by-step explanation:

If the apples were priced at $3.50/kg, then the cost of 1 kg of apples would be $3.50.

To find out the weight of 12 apples, we can divide the total cost of $6.72 by the cost of 1 kg of apples:

$6.72 ÷ $3.50/kg = 1.92 kg

So, the weight of 12 apples is 1.92 kg.

To find the average weight of 1 apple, we can divide the total weight of the 12 apples by the number of apples:

1.92 kg ÷ 12 = 0.16 kg

Finally, we need to convert the weight of 1 apple from kilograms to grams:

0.16 kg x 1000 g/kg = 160 g

Therefore, the average weight of an apple in grams is 160 g.

The temperature in Buffalo when it is 23 degrees Fahrenheit is equivalent to -5 degrees Celsius.

Fahrenheit is a temperature scale that was created by Gabriel Fahrenheit in 1724. Fahrenheit is used primarily in the United States and a few other countries. The boiling point of water on this scale is 212 degrees Fahrenheit, while the freezing point is 32 degrees Fahrenheit.

The Celsius scale, on the other hand, is a temperature scale that is used throughout the world. It was created in 1742 by Swedish astronomer Anders Celsius. On this scale, the boiling point of water is 100 degrees Celsius, and the freezing point is 0 degrees Celsius.

The formula for converting degrees Fahrenheit to degrees Celsius is: C=5/9(F-32). C is the equivalent Celsius temperature, while F is the equivalent Fahrenheit temperature.

Let's put the formula into practice to answer the question, "If the temperature in Buffalo is 23 degrees Fahrenheit,

We can simply plug in the given value for Fahrenheit temperature, which is 23 degrees Fahrenheit.

C = (5/9) (23 - 32)C = (5/9) (-9)C = -5

Therefore, -5 degrees Celsius is equivalent to 23 degrees Fahrenheit when the temperature is in Buffalo.

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Answer:

Step-by-step explanation:

First find BC:

      [tex]BC^2=BD^2+DC^2[/tex]       (Pythagoras Theorem)

  [tex]\rightarrow BC^2=4^2+4^2[/tex]

  [tex]\rightarrow BC^2=32[/tex]

    [tex]\rightarrow BC=\sqrt{32} cm[/tex]

Now find AB:

    [tex]AB^2=AC^2+BC^2[/tex]          (Pythagoras Theorem)

  [tex]\rightarrow AB^2=4^2+(\sqrt{32}) ^2[/tex]

  [tex]\rightarrow AB^2=16+32[/tex]

  [tex]\rightarrow AB^2=48[/tex]

  [tex]\rightarrow AB=\sqrt{48}=6.9cm[/tex]

Diagonal AB = 6.9cm

The missing value to find the length of BC is 9x.

The distance formula is a formula for calculating the separation in coordinates between two places. It is provided by and deduced from the Pythagorean theorem by:

distance = √((x₂ - x₁)² + (y₂ - y₁)²)

The distance formula is used to compute distances between objects or places in many disciplines, including geometry, physics, and engineering.

The distance formula is given as:

distance = √((x₂ - x₁)² + (y₂ - y₁)²)

Substituting the values of the coordinates of B and C we have:

distance = √((7x - (-2x))² + (-1y - (-4y))²)

distance = √((9x)² + (3y)²)

distance = √(81x² + 9y²)

distance = 3√(9x² + y²)

Hence, the missing value to find the length of BC is 9x.

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Answer: The numbers that cannot represent the three sides of a right triangle are {35, 84, 91}.

Step-by-step explanation:

To estimate the distance traveled  we need to find the area under the velocity-time graph from 0 to 8 seconds So,The estimate for the distance the car traveled for the first 8 seconds is 4000 meters.

A velocity-time graph is a graphical representation that shows the velocity of an object on the y-axis and time on the x-axis. It is used to depict the change in velocity over time and can provide information about the acceleration or deceleration of an object.

The height of each strip can be estimated by taking the average of the velocities at the beginning and end of the strip.

Using the trapezium rule, the estimated area of each strip is:

Strip 1: 0.5 x (0 + 2) x (0 + (-500)) = -500 m/s

Strip 2: 0.5 x (2 + 4) x (-500 + (-1000)) = -1500 m/s

Strip 3: 0.5 x (4 + 6) x (-1000 + (-500)) = -1500 m/s

Strip 4: 0.5 x (6 + 8) x (-500 + 0) = -500 m/s

The total estimated area is the sum of the areas of the 4 strips:

Total estimated area = -500 + (-1500) + (-1500) + (-500) = -4000 m/s

Since the area represents the distance traveled by the car, we can take the absolute value of the area to get the estimated distance traveled:

Estimated distance traveled is = |-4000| = 4000 meters

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D can be written as a single power of [tex]10: 10^{(-12).[/tex]

E. E is already a single power of [tex]10: 10^6.[/tex]

A term may be a number, a variable, the prοduct οf twο οr mοre variables, οr the prοduct οf a number and a variable. An algebraic expressiοn can cοnsist οf a single term οr a cοllectiοn οf terms. Fοr example, in the expressiοn 4x + y, the twο terms are 4x and y.

A. Since the base is the same, we can add the exponents of 10 to simplify 10(-2) * 10(-4). That is to say:

[tex]10^(-2) * 10^{(-4)} = 10^{(-2-4)} = 10^{(-6) (-6)[/tex]

As a result, A can be written as a single power of ten: 10 (-6).

B. To simplify (106 * 10(-1)) / 104 * 107, first simplify the numerator and denominator separately, then divide:

[tex](10^6 * 10^{(-1)}) / 10^4 * 10^7 = 10^{(6-1)} / 10^{(4-7)}= 10^5 / 10^{(-3)} = 10^{(5+3)} = 10^8[/tex]

As a result, B can be written as a single power of ten: 1008.

C. To simplify (104 * 107) / (103)4, we can start with the denominator:

[tex](10^4 * 10^7) / (10^3)^4 = (10^4 * 10^7) / 10^{12[/tex]

The exponents of 10 can then be added:

[tex](10^4 * 10^7) / 10^{12} = 10^{(4+7-12)} = 10^{(-1)[/tex]

As a result, C can be written as a single power of ten: 10 (-1).

D. To simplify (10(-3)),

We can multiply the exponents of 10 by 4:

[tex](10^{(-3)})^4 = 10^{(-3*4)} = 10^{(-12)[/tex]

As a result, D can be written as a single power of ten: 10 (-12).

E already has a single power of ten: 106.

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Option (D) is correct because we can not determine whether the given pair of angles are complementary, supplementary, or neither

The given pair of angles can be either complementary or supplementary, depending on the value of x.

Complementary Angles: Two angles whose sum is 90 degrees are called complementary angles. In other words, if the sum of two angles is 90 degrees, then they are called complementary angles.

Supplementary Angles: Two angles whose sum is 180 degrees are called supplementary angles. In other words, if the sum of two angles is 180 degrees, then they are called supplementary angles.

Neither: If the sum of two angles is neither 90 degrees nor 180 degrees, then they are called neither complementary nor supplementary angles.

Not Enough Information (It depends on the value of x): If the measure of x is not given, then we cannot determine whether the given pair of angles are complementary, supplementary, or neither.

Hence, it depends on the value of x. Therefore, option D is the correct answer.

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(a) The function sin⁻¹ has a domain of [-1, 1] and a range of [-π/2, π/2].

(b) The function cos⁻¹ has a domain of [-1, 1] and a range of [0, π].

(c) The function tan⁻¹ has a domain of (-∞, ∞) and a range of (-π/2, π/2).

In mathematics, the domain and range are concepts used to describe the inputs and outputs of a function.

The domain of a function is the set of all possible inputs or values of the independent variable for which the function is defined or meaningful.

The range of a function, on the other hand, is the set of all possible outputs or values of the dependent variable that the function can produce for all the inputs in the domain.

The inverse sine function, denoted sin⁻¹, takes as input a value between -1 and 1, and returns the angle whose sine is equal to that value. Therefore, its domain is [-1, 1], since the sine of an angle cannot exceed these limits. The range of sin⁻¹ is the set of all angles whose sine lies between -1 and 1. The smallest such angle is -π/2, which corresponds to a sine of -1, and the largest such angle is π/2, which corresponds to a sine of 1. Hence, the range of sin⁻¹ is [-π/2, π/2].

The inverse cosine function, denoted cos⁻¹, is similar to sin⁻¹, but takes as input a value between -1 and 1 and returns the angle whose cosine is equal to that value. Its domain is also [-1, 1], since the cosine of an angle cannot exceed these limits. However, the range of cos⁻¹ is different from that of sin⁻¹. It starts at 0, which corresponds to a cosine of 1, and ends at π, which corresponds to a cosine of -1. The reason for this difference is that the cosine of an angle is always positive or zero when the angle lies between 0 and π radians.

The inverse tangent function, denoted tan⁻¹, takes as input any real number and returns the angle whose tangent is equal to that number. Its domain is (-∞, ∞), since the tangent of an angle can take on any real value. The range of tan⁻¹ is between -π/2 and π/2, since the tangent of an angle becomes infinite at these values.

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Answer:

11 weeks

Step-by-step explanation:

42 + 15 * x = 207

42 + 15x = 207

15x = 207 - 42

15x = 165

x = 11

Hope this helps <3

For accounting purposes, depreciation is an allocation of a cost of an asset.

Both depreciation and amortization are techniques for spreading out an asset's cost throughout its useful life, although they are employed for various asset categories. Whereas amortisation is used for intangible assets like patents, copyrights, and trademarks, depreciation is utilised for tangible assets like buildings, machinery, and equipment. Depreciation is a method used to account for an asset's decline in value as a result of damage or obsolescence. During the course of the asset's useful life, the asset's cost is distributed to match the income it produces.

Depreciation is an accounting technique used to distribute a tangible asset's cost over the course of its useful life.

Hence, for accounting purposes, depreciation is an allocation of a cost of an asset.

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The quadratic form are a) ′ = ᵢⱼ∑ ᵢⱼᵢ, b)  ′()=′, c) ((+)/2)=′, d) 2−3²−².
The question is asking for an expression of the quadratic form with coefficient matrix A for 2c-3rjt2-z2.
For (a): The quadratic form of the vector x with coefficient matrix A is expressed as ′ = ᵢⱼ∑ ᵢⱼᵢ, where is an × matrix and is an -vector.
For (b): Taking the transpose of the triple product ′ we get ′()=′, which shows that the quadratic form with the transposed coefficient matrix has the same value for any a.
For (c): The quadratic form with coefficient matrix equal to the symmetric part of a matrix (i.e., (A+AT)/2) is expressed as ((+)/2)=′, which shows that the quadratic form with coefficient matrix equal to the symmetric part of a matrix has the same value as the original quadratic form.
For (d): The expression 2c-3rjt2-z2 as a quadratic form, with symmetric coefficient matrix A, is expressed as ((+)/2)= 2−3²−², where is a symmetric matrix.

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Answer:

- 1 and 7

Step-by-step explanation:

to find h(0) substitute x = 0 into h(x)

h(0) = 4(0) - 1 = 0 - 1 = - 1

to find h2) substitute x = 2 into h(x)

h(2) = 4(2) - 1 = 8 - 1 = 7

Answer: $15.25

Step-by-step explanation:

Let x be the number of apples purchased and y be the number of mangos purchased. Then we have the following constraints:

2.25x + 1.25y ≤ 20 (Jose has $20 to spend)

x + y ≥ 9 (Jose must buy at least 9 apples and mangos altogether)

x ≥ 3 (Jose must buy at least 3 apples)

y ≤ 9 (Jose can buy at most 9 mangos)

To solve this system of inequalities graphically, we can plot the relevant lines and shade the feasible region.

First, we graph the line 2.25x + 1.25y = 20 by finding its intercepts:

When x = 0, we have 1.25y = 20, so y = 16.

When y = 0, we have 2.25x = 20, so x = 8.89 (rounded to two decimal places).

Plotting these intercepts and connecting them with a line, we get:

     |       *

 16  |   *    

     |      

     |  /    

     | /      

     |/      

 0   *--------*

      0    8.89

Next, we graph the line x + y = 9 by finding its intercepts:

When x = 0, we have y = 9.

When y = 0, we have x = 9.

Plotting these intercepts and connecting them with a line, we get:

    |      

 9   |   *    

     |      

     |  /    

     | /      

     |/      

 0   *--------*

      0    9  

Finally, we shade the feasible region by considering the remaining constraints:

x ≥ 3: This means we shade to the right of the line x = 3.

y ≤ 9: This means we shade below the line y = 9.

Shading these regions and finding their intersection, we get:

   |       *

 16  |   *    |

     |       |

     |  /    |

     | /     |

     |/      |

 9   *--------*---

     |       | /

     |       |/

     |       *

 0   *--------*

      3    8.89

The feasible region is the shaded triangle bounded by the lines 2.25x + 1.25y = 20, x + y = 9, and x = 3.

To find one possible solution, we can pick any point within the feasible region. For example, the point (4, 5) satisfies all the constraints and represents buying 4 apples and 5 mangos, which costs 4(2.25) + 5(1.25) = $15.25.

The distance between the third traffic light from the second traffic light is 35 yards.

Three traffic lights on a street span 120 yards.

If the second traffic light is 85 yards away from the first.

Therefore, the third traffic light is 120 - 85 =35 yards away from the second traffic light.

This means that the third traffic light is directly adjacent to the first traffic light. The third traffic light from the second traffic light is at the same location as the first traffic light.

Thus, the distance between the third traffic light from the second traffic light is 35 yards.

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Yes, it is possible to write 7 as a linear combination of the given vectors V1, V2, and V3 with coefficients that are not all zero.

One such linear combination can be given as follows:7 = -3V1 + 4V2 + V3To prove that this is indeed a linear combination of the given vectors, we can substitute the given vectors and coefficients in the above expression and verify that it gives the desired result.

So, we have:RHS = -3V1 + 4V2 + V3= -3(2i - 3j + k) + 4(-i + 2j + 3k) + (i - j - k)= -6i + 9j - 3k - i + 8j + 12k + i - j - k= 7j + 8kSince this result matches with the given vector 7, we can conclude that 7 can be written as a linear combination of the given vectors with coefficients that are not all zero.Hence, the required linear combination is:7 = -3V1 + 4V2 + V3.

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the possible dimensions of the rectangular prism are:

1 unit by 12 units by 10 units

2 units by 6 units by 10 units

3 units by 4 units by 10 units

Let the length and width of the rectangular prism be represented by l and w, respectively. Since the height of the prism is 10 unit cubes, we know that the volume of the prism is:

V = l × w × 10

We are also given that the prism requires 120 unit cubes to fill completely, which means:

V = l × w × 10 = 120

Dividing both sides by 10, we get:

l × w = 12

Now we need to find pairs of positive integers l and w that multiply to 12. These are:

1 × 12

2 × 6

3 × 4

Therefore, the possible dimensions of the rectangular prism are:

1 unit by 12 units by 10 units

2 units by 6 units by 10 units

3 units by 4 units by 10 units

Note that these dimensions are not unique, as we can also obtain different dimensions by exchanging the length and width, or by rotating the prism.

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Answer:

To find the perimeter, we need to add up the lengths of all the sides. In this case, we have four sides with lengths given by the expressions 2v-5, 4v+5, 2v-5, and 8v-7.

So the perimeter P is:

P = (2v-5) + (4v+5) + (2v-5) + (8v-7)

Simplifying and combining like terms, we get:

P = 16v - 12

Therefore, the perimeter is 16v - 12.

Answer:

 16/99

Step-by-step explanation:

so you turn into an algebraic equation

[tex]x[/tex] = 0.1616161616

100[tex]x[/tex]=16.161616

100[tex]x[/tex]-1[tex]x[/tex]=99[tex]x[/tex]

99[tex]x[/tex]=16.1616-0.1616

     = 16

[tex]x[/tex]= [tex]\frac{16}{99}[/tex]

Answer:

No, Jamel is not correct. While the 9 in 129,082 is indeed two places to the left of the 9 in 127,694, it is not two times greater.

In fact, the value of a digit in a number is determined by its place value. Each place value to the left represents a value that is ten times greater than the previous place value. So, the 9 in the ten thousands place of 129,082 represents a value of 9 x 10,000 = 90,000.

Similarly, the 9 in the ten thousands place of 127,694 represents a value of 9 x 10,000 = 90,000 as well. Therefore, both 9s have the same value and are not different by a factor of two.

In summary, Jamel's reasoning is flawed and not correct. The value of a digit in a number is based on its place value, and not its position relative to other digits.