Patricia is studying a polynomial function f(x). Three given roots of f(x) are Negative 11 minus StartRoot 2 EndRoot i, 3 + 4i, and 10. Patricia concludes that f(x) must be a polynomial with degree 4. Which statement is true?

The left-hand limit and the right-hand limit both do not exist, the limit of sin(1/x) as x approaches 0 does not exist.

(i) To show that the limit of (1/x^2) as x approaches 0 does not exist, we need to show that the limit from the left-hand side and the right-hand side are not equal or they both go to infinity. Let's consider the right-hand limit:

lim x→0+ (1/x^2) = +∞ (the limit goes to infinity)

Now let's consider the left-hand limit:

lim x→0- (1/x^2) = +∞ (the limit goes to infinity)

Since the left-hand limit and the right-hand limit are both infinite and not equal, the limit does not exist.

(ii) To show that the limit of (1/√x^2) as x approaches 0 does not exist, we need to show that the limit from the left-hand side and the right-hand side are not equal or one or both of them goes to infinity. Let's consider the right-hand limit:

lim x→0+ (1/√x^2) = lim x→0+ (1/|x|) = +∞ (the limit goes to infinity)

Now let's consider the left-hand limit:

lim x→0- (1/√x^2) = lim x→0- (1/|x|) = -∞ (the limit goes to negative infinity)

Since the left-hand limit and the right-hand limit are not equal, the limit does not exist.

(iii) To show that the limit of (x+(x)) as x approaches 0 does not exist, we need to show that the limit from the left-hand side and the right-hand side are not equal or one or both of them goes to infinity. Let's consider the right-hand limit:

lim x→0+ (x+(x)) = 0+0 = 0

Now let's consider the left-hand limit:

lim x→0- (x+(x)) = 0+0 = 0

Since the left-hand limit and the right-hand limit are equal, the limit exists and equals 0.

(iv) To show that the limit of sin(1/x) as x approaches 0 does not exist, we need to show that the limit from the left-hand side and the right-hand side are not equal or one or both of them goes to infinity. Let's consider the right-hand limit:

lim x→0+ sin(1/x) does not exist

This is because sin(1/x) oscillates infinitely many times between -1 and 1 as x approaches 0 from the right-hand side, and the limit does not approach any single value.

Now let's consider the left-hand limit:

lim x→0- sin(1/x) does not exist

This is because sin(1/x) oscillates infinitely many times between -1 and 1 as x approaches 0 from the left-hand side, and the limit does not approach any single value.

Since the left-hand limit and the right-hand limit both do not exist, the limit of sin(1/x) as x approaches 0 does not exist.

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The discriminant of f(x)is -28, and f(x) has no distinct real number zeros.

The expression[tex]b^{2}- 4ac[/tex] gives the value of discriminant of the quadratic function with the form f(x) = [tex]ax^{2} + bx + c[/tex]. This result is obtained through using this formula on the quadratic function, where f(x) = [tex]-4x^{2}+ 10x - 8[/tex]:  [tex]b^2 - 4ac = (10)^2 - 4(-4)(-8)[/tex] = 100-128 = -28. Hence, -28 is the discriminant of f(x).

The discriminant informs us of the characteristics of the quadratic equation's roots. There are two unique real roots if the discriminant index is positive. There is just one real root (with a multiplicity of 2) if the discriminator is zero. There are only two complicated roots (no real roots) if discrimination is negative.

Given that f(x)'s discriminant is minus (-28), we can conclude that there are no true roots. F(x) contains two complex roots as a result. This is further demonstrated by the fact that the parabola widens downward and does not cross the x-axis, as indicated by the fact that the coefficient of the [tex]x^{2}[/tex] term in f(x) is negative.

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Is due to the fact that the standard error of the sample mean decreases with increasing sample size, leading to a more accurate estimation of the population mean.

To determine whether it is more likely to randomly select one woman with a height less than 64.4 inches or a sample of 21 women with a mean height less than 64.4 inches, we need to calculate the probability in each case.

Case 1: Randomly selecting 1 woman with height less than 64.4 inches

Since the height is normally distributed with a mean of 63.7 inches and a standard deviation of 2.5 inches, we can use the z-score formula to calculate the probability of selecting a woman with height less than 64.4 inches:

z = (64.4 - 63.7) / 2.5 = 0.28

From the standard normal distribution table, we can find that the probability of selecting a woman with a z-score of 0.28 or less is approximately 0.6103. Therefore, the probability of randomly selecting one woman with a height less than 64.4 inches is 0.6103.

Case 2: Selecting a sample of 21 women with mean height less than 64.4 inches

Since we are dealing with a sample mean, we need to use the central limit theorem, which tells us that the distribution of sample means will be approximately normal, with a mean of the population mean (63.7 inches) and a standard deviation of the population standard deviation divided by the square root of the sample size (2.5 / sqrt(21) = 0.545).

Using the same formula as before, we can calculate the z-score for a sample mean of less than 64.4 inches:

z = (64.4 - 63.7) / (2.5 / sqrt(21)) = 1.252

From the standard normal distribution table, we can find that the probability of selecting a sample mean with a z-score of 1.252 or less is approximately 0.8944. Therefore, the probability of selecting a sample of 21 women with mean height less than 64.4 inches is 0.8944.

Conclusion:

Based on the calculated probabilities, we can conclude that it is more likely to select a sample of 21 women with mean height less than 64.4 inches, as the probability of this event is higher than the probability of randomly selecting one woman with height less than 64.4 inches. This is due to the fact that the standard error of the sample mean decreases with increasing sample size, leading to a more accurate estimation of the population mean.

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A. Theoretical probability of rolling each value for both Diamond and Trevor is 16.67%.

The experimental probability of rolling each value for Diamond is 16.95% for one, 33.20% for two, and 49.84% for three.

The experimental probability of rolling each value for Trevor is 69.38% for one, 24.45% for two, and 6.17% for three. Based on the Law of Large Numbers, Diamond's dice can be assumed to be fair, but Trevor's dice cannot be assumed to be fair.

The theoretical probability of rolling each value for both Diamond and Trevor is 1/6 or 16.67%. To find the experimental probability for Diamond, we divide the number of times each value was rolled by the total number of rolls and multiply by 100%. For example, the experimental probability of rolling one is (217/1280) x 100% = 16.95%.

Based on the Law of Large Numbers, which states that the sample mean will approach the population mean as the sample size increases, we can reasonably assume that Diamond's dice is fair.

However, Trevor's dice cannot be assumed to be fair because the experimental probability of rolling each value is significantly different from the theoretical probability, indicating a potential bias in the dice.

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The surface area of the cube is 1014 square millimeters.

The formula for the surface area of a cube is a=6s², where s is the length of the side of the cube. Given that the length of each side of the cube is 13 mm, we can substitute this value into the formula and simplify:

a = 6s²

a = 6(13²)

a = 6(169)

a = 1014

The surface area of a cube refers to the total area of all its faces. Since a cube has 6 faces of equal size, we can multiply the area of one face by 6 to obtain the total surface area of the cube. The formula A = 6s² represents this concept, where s is the length of the side of the cube.

Therefore, the surface area of the cube with a side length of 13 mm is 1014 square millimeters.

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Let us discuss the specific solution for the given initial value problem.

To solve the initial value problem Y'' + 2Y' + 3Y = H(t - 4), y(0) = y'(0) = 0, follow these steps:

Step 1: Identify the homogeneous part of the equation and find the complementary solution.
The homogeneous part is Y'' + 2Y' + 3Y = 0. To find the complementary solution, solve the characteristic equation: r^2 + 2r + 3 = 0. This equation has complex roots r = -1 ± √2i. Therefore, the complementary solution is Yc(t) = e^(-t)(C1*cos(√2*t) + C2*sin(√2*t)).

Step 2: Find the particular solution for the non-homogeneous part of the equation.
The non-homogeneous part is H(t - 4), which is a Heaviside step function. To find the particular solution, we can use the method of undetermined coefficients. Since the right side is a step function, we can assume a particular solution of the form Yp(t) = A*H(t - 4). Differentiate Yp(t) twice and substitute the results into the given equation to find A.

Step 3: Add the complementary and particular solutions to get the general solution.
The general solution is Y(t) = Yc(t) + Yp(t).

Step 4: Apply the initial conditions y(0) = 0 and y'(0) = 0.
Substitute t = 0 into the general solution and its first derivative. Solve the resulting system of equations for C1 and C2.

Step 5: Substitute the values of C1 and C2 into the general solution.

This will give you the specific solution for the given initial value problem.

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The value of the unknown angle is 40⁰

A chord of a circle is a straight line segment whose endpoints both lie on a circular arc. If a chord were to be extended infinitely on both directions into a line, the object is a secant line. More generally, a chord is a line segment joining two points on any curve

In geometry, a circular segment (symbol:  also known as a disk segment, is a region of a disk which is "cut off" from the rest of the disk by a secant or a chord.

Circle theorems are properties that show relationships between angles within the geometry of a circle. We can use these theorems along with prior knowledge of other angle properties to calculate missing angles, without the use of a protractor. This has very useful applications within design and engineering.

Angles in the same segment are equal

The two angles marked are seen to be in the same segment and as such they are equal angles

The value of each of the angles is 40⁰

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[tex]\textit{volume of a cylinder}\\\\ V=\pi r^2 h~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ r=2.5\\ V=37.5\pi \end{cases}\implies 37.5\pi =\pi (2.5)^2 h \\\\\\ \cfrac{37.5\pi }{2.5^2 \pi }=h\implies \cfrac{37.5}{6.25}=h\implies 6=h[/tex]

The value of the output is independent of the value of the input.

In the graph, the input is the x value (x-axis) and the output is the y value (y-axis).

Looking at the graph, you notice the y values are constant (the same) while the x values changes.

What this means is that whatever the value of the input (x value), the value of the output (y value) will remain the same. That is the value of the output is independent of the value of the input.

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Answer:

385 in ^3

Step-by-step explanation:

11 x 7 x 5

Answer: blue

Step-by-step explanation:

blue

The residuals for the sales data are 106, 95, 86, 96, 89, 89, 89, 93, 83, and 94.

Residuals represent the differences between the observed values and the predicted values of the dependent variable. In a regression analysis, the predicted values are estimated using the regression equation, while the observed values are the actual values of the dependent variable.

To compute the residuals in this case, we need to first use the estimated regression equation to predict the values of annual sales based on years of experience for each salesperson. The estimated regression equation is:

Annual Sales ($1,000s) = -30 + 4 x Years of Experience

Using this equation, we can predict the annual sales for each salesperson based on their years of experience. Then, we can subtract the predicted values from the actual values to obtain the residuals.

For example, for the first salesperson who has one year of experience and annual sales of $80, we can predict their annual sales using the regression equation as:

Annual Sales = -30 + 4 x 1 = -26

The residual for this salesperson is then:

Residual = $80 - (-26) = $106

We can repeat this process for each salesperson and obtain the following table:

Years of Experience Annual Sales ($1,000s) Predicted Annual Sales Residuals

1 80 -26 106

3 97 2 95

4 92 6 86

4 102 6 96

6 103 14 89

8 111 22 89

10 119 30 89

10 123 30 93

11 117 34 83

13 136 42 94

So the residuals for the sales data are 106, 95, 86, 96, 89, 89, 89, 93, 83, and 94.

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Answer:

D. shapes with a right angle

Step-by-step explanation:

All shapes, parallelogram, irregular hexagon and the right triangle have or are capable of having a right angle. None of the other answers make sense either.

Hope this helps :)

Answer:

D. shapes with a right angle

Step-by-step explanation:

In the expression 7x + 15, 15 is a COEFFICIENT: False.

In the expression 7x + 15, 15 is a constant.

3x + 7 means (3x + 7) DIVIDED BY 2: False.

3x + 7 means 3x plus 7.

You can rewrite 2(4 + 8) as (2)(4) + (2)(8) using the DISTRIBUTIVE PROPERTY: True.

In Mathematics, the distributive property of multiplication states that when the sum of two or more addends are multiplied by a particular numerical value, the same result and output would be obtained as when each addend is multiplied respectively by the same numerical value, and the products are added together.

By applying the distributive property of multiplication to left side of the equation, we have the following:

2(4 + 8) = (2)(4) + (2)(8)

2(12) = 8 + 16

24 = 24

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Answer:

Step-by-step explanation:

its 2.82, a little further forward, 82% of the way to number 3

Check the picture below.

The estimated values of a, b, and c are approximately 16.32, 0.9555, and 0.6417, respectively.

Solving for y3 using the method of successive approximation:

We start by setting up the first iteration, with h = dx = 0.1:

y1 = 1 (given)

y2 = y1 + h(x1 + y1) = 1 + 0.1(1+1) = 1.2

y3 = y2 + h(x2 + y2) = 1.2 + 0.1(2+1.2) = 1.44

y4 = y3 + h(x3 + y3) = 1.44 + 0.1(3+1.44) = 1.728

And so on.

After several iterations, the values converge to a particular value. In this case, y3 ≈ 1.6273.

Interpolating f(2.6) using Lagrange interpolation:

We have:

f(2.6) = L1(2.6)y1 + L2(2.6)y2 + L3(2.6)y3

where Li(x) = ∏j≠i (x-xj)/(xi-xj)

Evaluating Li(2.6) for i = 1, 2, 3:

L1(2.6) = (2.6-2)(2.6-3) / ((1-2)(1-3)) = 0.25

L2(2.6) = (2.6-1)(2.6-3) / ((2-1)(2-3)) = -0.5

L3(2.6) = (2.6-1)(2.6-2) / ((3-1)(3-2)) = 0.25

Substituting the given values:

f(2.6) ≈ 0.25(2.7183) - 0.5(7.3891) + 0.25(20.0855) ≈ 8.6082

Therefore, f(2.6) ≈ 8.6082.

Estimating the values of a, b, and c using multiple linear regression:

We can rewrite the model as a linear equation by taking the natural logarithm of both sides:

ln(y) = ln(a) + b ln(x) + c ln(e)

We can then use linear regression techniques to estimate the values of ln(a), b, and c. Using the given data and a statistical software, we obtain the following estimates:

ln(a) = 2.7912

b = 0.9555

c = -0.4462

To obtain estimates for a, b, and c themselves, we exponentiate the values of ln(a) and ln(e):

a ≈ e^2.7912 ≈ 16.32

b ≈ 0.9555

c ≈ 0.6417

Therefore, the estimated values of a, b, and c are approximately 16.32, 0.9555, and 0.6417, respectively.

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(a) The equation of the least-squares regression line that describes the relationship between the distance traveled in miles (x) and the pounds of fuel consumed (y) is given by: y = -4702.64 + 21.282x
(b) If the plot shows a random scatter, it indicates that the linear regression model is appropriate.
(c) The y-intercept in the context of the problem is -4702.64, which represents the predicted pounds of fuel consumed when the distance traveled is zero miles.

(a) The equation of the least-squares regression line for predicting the pounds of fuel consumed based on the distance traveled in miles is:

Fuel Consumed (lbs) = -4702.64 + 21.282 Distance Travelled (miles)

where Fuel Consumed and Distance Travelled are the variables used in the equation.

(b) Based on the residual plot, it is appropriate to use the linear regression equation to make predictions. The plot shows that the residuals are randomly scattered around the horizontal line at zero, indicating that there is no pattern or trend in the residuals. This suggests that the linear regression model is a good fit for the data and that the assumptions of linearity and constant variance are not violated.

(c) The y-intercept (-4702.64) represents the estimated pounds of fuel consumed when the distance traveled is zero. However, this value is not statistically meaningful in the context of the problem, as passenger aircraft cannot consume fuel if they do not travel any distance. Therefore, the y-intercept should not be interpreted in this case. The p-value for the intercept is 0.022, which is less than 0.05, indicating that the y-intercept is statistically significant. However, it may not be practically meaningful or interpretable in this context.

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The manufacturer claims that their batteries, Type A, exceed their competitor, Type B. However, based on the summary statistics collected by the consumer organization, no definitive conclusion can be drawn as to which battery type lasts longer.

The summary statistics for Type A and Type B batteries must be compared to determine which one lasts longer. The statistics to compare include the mean, median, and range of each battery type.

If the mean and median lifespans of Type A are higher than those of Type B, and if the range of Type A is smaller than that of Type B, then it can be concluded that Type A lasts longer.

However, if the statistics show the opposite, or if there is overlap between the ranges of the two types, then no definitive conclusion can be made as to which battery type lasts longer.

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Kami will have $1,413.60 in the account after 4 years.

(1) Depositing $550 at 3% interest for one year generated a $16.50 profit for Abe.

(2) Jessi returned a $1,500 loan with a quarterly 3% rate and paid $1,511.25 in total.

(3) After keeping a deposit worth $418 at 2% for a year, Heath made an $8.36 profit. In 5.5 years, his account balance grew to $463.98.

(4) By depositing $825.50 at 4%, Pablo saw a $33.02 profit within a year.

(5) Kami put down $1,140 earning a $68.40 annual yield thanks to the 6% interest rate. Four years later, her account balance reached $1,413.60.

Interest = 1,140 * 0.06 * 4 = $273.60

Now, add the interest to the principal:

Total Amount = Principal + Interest = 1,140 + 273.60 = $1,413.60

Kami will have $1,413.60 in the account after 4 years.

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The distance of the jot air balloon to ground is 21.62 ft.

Here, we have,

In triangle ACB:

tan36° = x/y

x  = y tan36°

In triangle ADB:

tan25° = x/y + 12

x  = y+12 * tan25°

Therefore equating both equations gives:

y tan36°  =  y+12 * tan25°

y tan36°  =  y tan25° + 12tan25°

so, we get,

y = 21.50 ft

Therefore x = 21.50*tan(36) = 15.62 ft

The distance of the jot air balloon to ground = 15.62 + 6 = 21.62 ft

Hence, The distance of the jot air balloon to ground is 21.62 ft.

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According to Pythagorean theorem, the length of BE is 2√(61) units.

To solve this problem, we need to use the Pythagorean Theorem, which tells us that in a right triangle, the square of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides. In this case, we can see that triangle ABE is a right triangle, with AB as the hypotenuse and BE and AE as the other two sides. Therefore, we can use the Pythagorean Theorem to find the length of BE.

To do this, we first need to find the length of AE. Since triangle ADE is a right triangle with a hypotenuse of length 4 and one leg of length 2, we can use the Pythagorean Theorem to find the length of the other leg, which is AE. Specifically, we have:

AE² + 2² = 4² AE² + 4 = 16 AE² = 12 AE = √(12) = 2√(3)

Now we can use the Pythagorean Theorem again to find the length of BE. Specifically, we have:

BE² + (2√(3))² = AB² BE² + 12 = (2AB)²

[since AB = AC = CD = DE = 4]

BE² + 12 = 16² BE² + 12 = 256 BE² = 244 BE = √(244) = 2√(61)

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The N electron configuration for nitrogen is 1s22s22p3.

To provide a complete electron configuration for nitrogen using the terms "electron" and "orbital," follow these steps:

1. Determine the atomic number of nitrogen (N). The atomic number of nitrogen is 7, meaning it has 7 electrons.
2. Fill the orbitals in order of increasing energy. The order is 1s, 2s, 2p, 3s, 3p, and so on.Following these steps, the electron configuration for nitrogen is 1s^22s^22p^3. This means there are 2 electrons in the 1s orbital, 2 electrons in the 2s orbital, and 3 electrons in the 2p orbital, which sums up to 7 electrons, corresponding to the atomic number of nitrogen.In writing the electron configuration for nitrogen, the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons, the next two electrons for N go in the 2s orbital. The remaining three electrons will go into the 2p orbital.

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Scatterplot would  more appropriate for displaying and describing the relationship between the age and the number of vocabulary words.

We have to compare scatterplot and line graph.

The association between age and vocabulary size would be better represented and explained by a scatter plot.

The link between two continuous variables is shown using a scatter plot; in this instance, age is a continuous variable whereas the quantity of vocabulary items is a discrete variable.

The relationship between the two variables can be visually examined with the use of scatter plots, which also reveal the direction and strength of the association.

Thus, the scatterplot is best choice.

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Picking a black card has a 1/2 chance of probability both ways.

The probability of an occurrence is a figure that represents how likely it is that the event will take place. In terms of percentage notation, it is expressed as a number between 0 and 1, or between 0% and 100%. The higher the likelihood, the more likely it is that the event will take place.

Hearts, clubs, spades, and diamonds make up the four suites of a normal deck of cards. 13 cards total—the ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen, and king—make up each suit. There are two jokers, bringing the total number of cards in the deck to 54.

In a deck, there are 26 black cards. Picking any of these 26 cards had a probability of p=26/52 = 1/2 since picking any card has the same probability (1/52).

1-p=1/2 goes against probability.

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Answer:

x < -3.5 or x < -7/2

Step-by-step explanation:

We can solve the inequality by solving for and isolating x:

[tex]4(-x-3)-4 > -2\\-4x-12-4 > -2\\-4x-16 > -2\\-4x > 14\\\\x < -7/2\\or\\x < -3.5[/tex]

We can check that our solution is correct by plugging in a number less than -3.5 for x like -4:

[tex]4(-(-4)-3)-4 > -2\\4(4-3)-4 > -2\\4(1)-4 > -2\\4-4 > -2\\0 > -2[/tex]

The inequality is true for any value of x less than -3.5 so the answer is correct

The domain of a relation is the set of all possible input values that can be used to calculate output values. In the case of the relation f(x) = x - 1, the domain is all real numbers because any real number can be substituted for x in the equation and an output value can be calculated. Therefore, the correct answer to the question is option a: {x|x + R}.

It is important to note that the domain of a relation can be restricted by certain conditions. For example, a square root function may have a domain of only non-negative numbers because taking the square root of a negative number is undefined. Additionally, some functions may have a limited domain due to practical or physical restrictions.

In summary, the domain of a relation is the set of all possible input values, and it is important to consider any restrictions that may apply. The domain of the relation f(x) = x - 1 is all real numbers, and the correct answer is option a: {x|x + R}.
The domain of the relation f(x) = x - 1 is a. {x|x ∈ R}.

In mathematics, a "domain" refers to the set of all possible input values (x-values) for which a given relation (a function or a rule that connects input values with output values) is defined. In this case, the relation is f(x) = x - 1.

Since the given relation is a simple linear function, it is defined for all real numbers (represented by R). There are no restrictions on the input values, as you can subtract 1 from any real number without causing any issues, such as division by zero or square roots of negative numbers.

Therefore, the correct answer is a. {x|x ∈ R}, which means "the set of all x such that x is an element of the set of real numbers." This domain includes all real numbers and can be represented as the entire x-axis on a graph.

In summary, for the relation f(x) = x - 1, the domain is all real numbers, which can be represented by the set notation {x|x ∈ R}.

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Answer: 10

Step-by-step explanation:

6 1/2 + 3 1/2
13/2 + 7/2
20/2
= 10

Step 1: Add the whole numbers

6 + 3 = 9

Step 2: Add the fractions

We can simply add the numerators while keeping the same denominator because the denominators are the same.

1/2 + 1/2 = 2/2 = 1

Step 3: Combine them

The answer is 10 since 9 and 1 are whole numbers. So we simply add them.

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Overall, we add the whole numbers first, then add the fractions. If the denominators are identical, we add the numerators and keep the same denominator. The solution will be displayed as a mixed number/fraction or a whole number. Since there was no fraction at the end, in this case, we simply added the whole numbers.

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The top-written number in a fraction is the numerator. It shows how many parts of the whole you are talking about.

For example, the numerator of the fraction 3/5 is 3, which means there are 3 parts out of a total of 5 equal parts.

The number of parts taken out of the whole is therefore represented by the numerator.

The number written at the bottom of a fraction works as the denominator. It gives the number of equally sized parts of the whole.

As an example, the denominator of the fraction 2/5 is 5, which shows that the entire is divided into four equal parts.

The total number of equal parts that make up the whole is represented by the denominator.

Mixing a full number and a fraction creates a mixed number. The whole number comes first, then a space, and then the fraction is written.

For example, the mixed number 2 1/2 is a whole number and a fraction, with 2 being the whole number. The word "and" between a mixed number's whole and fraction might be removed or included.

A proper fraction, or one that is less than one whole, must make up the fractional part of the mixed number. Quantities that are not whole numbers but instead consist of several whole numbers are represented by mixed numbers.

A number that represents a finished item or thing is said to be a whole number. It is a number that is neither a decimal nor a fraction.

All natural numbers and zero are considered whole numbers. These are positive integers without decimals, fractions, or negative numbers. A few examples of entire numbers include 1, 2, 3, and so forth.

For counting items that cannot be divided into smaller portions, whole numbers are used.

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