Consider a political discussion group consisting of 7 Democrats, 4 Republicans, and 5 Independents. Suppose that two group members are randomly selected, in succession, to attend a political convention. Find the probability of selecting two Independents

The total surface area of the cone is 67T cm².

Surface Area of the cone = πre + B

Given: radius, r = 5 cm

slant height, e = 12 cm

The base of the cone is a circle with radius r, so B = πr²

B = π(5 cm)² = 25π cm²

Now, let's find πre:

πre = π(5 cm)(12 cm) = 60π cm²

So, the total surface area of the cone is:

SA = πre + B = 60π cm² + 25π cm² = 85π cm²

Finally, substituting π with T/3:

SA = 85π cm² = 85(T/3) cm² = 67T cm² (rounded to the nearest whole number)

A cone is a three-dimensional shape that has a circular base and a curved surface that tapers to a point called the apex. The surface area of a cone is the sum of the areas of its base and its curved surface.

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hope this helps you to understand the question the method is to draw the information given into a diagram so that you can allow your brain to think abut the steps.

do ask if you are still in doubt.

The distance of Z from Y is approximately 140 km, and the bearing of Z from Y is 315 degrees.

Let's find the distance of Z from Y first. We can use the law of cosines, which states that in any triangle, the square of one side is equal to the sum of the squares of the other two sides minus twice the product of these two sides and the cosine of the included angle.

Let:

Distance XY be denoted as a (given as 60 km).

Distance XZ be denoted as b (given as 80 km).

The angle YXZ be denoted as C (since angle Y and angle Z form a straight line, C = 180°).

Now, the distance of Z from Y (ZY) can be calculated as follows:

ZY² = XY² + XZ² - 2 * XY * XZ * cos(C)

ZY² = 60² + 80² - 2 * 60 * 80 * cos(180°)

ZY² = 3600 + 6400 + 9600

ZY² = 19600

ZY = √19600

ZY ≈ 140 km

Now, to find the bearing of Z from Y, we can use the concept of bearings, which are angles measured clockwise from the north direction to the line joining two points. We know the bearing of Y from X is 135°, so the bearing of Z from Y can be calculated as follows:

Bearing of Z from Y = (Bearing of Y from X + Angle ZYX) mod 360°

Bearing of Z from Y = (135° + 180°) mod 360°

Bearing of Z from Y = 315° mod 360°

Bearing of Z from Y = 315°

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(A) x(t) = ln(t+1) + C, where C is a constant.

(B) dy/dt = 3x^2 - 3.

(C) At t = 8, the particle is located at x = ln(9) - 1 and has a speed of |3(3ln(9) - 3)^2 - 3|.

(A) To find x(t) in terms of t, we integrate dx/dt with respect to t. Integrating 1/(t+1) gives us ln(t+1) + C, where C is a constant. Since x(3) = -1, we can substitute t = 3 and x = -1 into the equation to solve for C. We get -1 = ln(3+1) + C, which gives us C = -1 - ln(4). Therefore, x(t) = ln(t+1) - ln(4) - 1.

(B) To find dy/dt in terms of t, we differentiate y = x^3 - 3x with respect to t using the chain rule. We have dy/dt = (dy/dx) * (dx/dt) = (3x^2 - 3) * (dx/dt). Substituting dx/dt = 1/(t+1), we get dy/dt = (3x^2 - 3)/(t+1).

(C) At t = 8, we can substitute t = 8 into x(t) to find the x-coordinate of the particle. We have x(8) = ln(8+1) - ln(4) - 1 = ln(9) - ln(4) - 1. To find the y-coordinate, we substitute this value of x into y = x^3 - 3x, giving us y(8) = (ln(9) - ln(4) - 1)^3 - 3(ln(9) - ln(4) - 1). To find the speed, we substitute x = ln(9) - ln(4) - 1 into dy/dt = (3x^2 - 3)/(t+1) and take the absolute value.

Therefore, at t = 8, the particle is located at the point (ln(9) - ln(4) - 1, (ln(9) - ln(4) - 1)^3 - 3(ln(9) - ln(4) - 1)), and its speed is given by |3((ln(9) - ln(4) - 1)^2 - 1)/(8+1)|.

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The value of E(x- μ) for the population for any given data is always equal to option b. 0.

Sum of squared deviations,

ss = 100

variance, σ² = 4

The value of E(x - μ) for the population can be determined .

Using the relationship between the sum of squared deviations (ss) and the variance (σ²).

ss = n × σ²

where ss is the sum of squared deviations,

σ² is the variance,

and n is the population size.

Substituting these values into the equation, solve for n,

⇒ 100 = n × 4

⇒ n = 100 / 4

⇒ n = 25

The expected value (E) of (x - μ) for the population is zero.

This means that on average, the difference between each data point (x) and the population mean (μ) is zero.

Therefore, the value of the expected operator E(x- μ) for the population is equal to option b. 0

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The above question is incomplete, the complete question is:

A population has sum of squared deviations, ss = 100 and variance, σ² = 4. What is the value of E(x- μ) for the population?

a. 400

b. 0

c. 10

d. 25

Answer:

-------------------

Use the formula:

Plugging in the given values, solve for h:

The height of the prism is 6 cm.

Answer:

∠ T = 126°

Step-by-step explanation:

in an isosceles trapezoid

• lower base angles are congruent

• any lower base angle is supplementary to any upper base angle

then

∠ U = ∠ W = 54° , so

∠ T + ∠ U = 180°

∠ T + 54° = 180° ( subtract 54° from both sides )

∠ T = 126°

Answer:

B. 0.344

Step-by-step explanation:

The question asks about the probability that the person is at at least 175 centimeters. The first column has a total of 86 people under the category of at least 175 centimeters tall. To find the probability, divide the given number of people at least 175 cm (86) by the total number surveyed (250). This gives you the answer of 0.344.

The probability of rolling an even number on a fair 666-sided die is 1/2. Therefore, the probability of rolling an even number twice in a row is (1/2) * (1/2) = 1/4. Rounded to 222 decimal places, the answer is 0.25.

To calculate the probability of rolling an even number with a fair 666-sided die, follow these steps:

1. Identify the total number of outcomes: There are 666 sides on the die, so there are 666 possible outcomes.
2. Identify the number of favorable outcomes: Half of the numbers on the die will be even (2, 4, 6, ...). Therefore, there are 333 even numbers.
3. Calculate the probability: Divide the number of favorable outcomes (even numbers) by the total number of outcomes (all possible rolls).

Probability = (number of even numbers) / (total number of possible rolls) = 333 / 666 = 0.5

So, the probability of rolling an even number on a fair 666-sided die is 0.5 or 50%. There's no need to round the answer to 222 decimal places as the probability is already exact.

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The probability that a data value is between 48 and 52 is 31.1 %

Given data ,

To find the probability that a data value is between 48 and 52 in a normal distribution with a mean of 50 and a standard deviation of 5, we can use the Z-score and the standard normal distribution.

First, we need to standardize the values of 48 and 52 by calculating their respective Z-scores.

Z-score formula: Z = (X - μ) / σ

X is the data value,

μ is the mean, and

σ is the standard deviation.

For 48:

Z1 = (48 - 50) / 5 = -0.4

For 52:

Z2 = (52 - 50) / 5 = 0.4

The probability of a Z-score between -0.4 and 0.4 can be found by subtracting the cumulative probability associated with -0.4 from the cumulative probability associated with 0.4.

Using a standard normal distribution table or calculator, we find that the cumulative probability for Z = -0.4 is approximately 0.3446, and the cumulative probability for Z = 0.4 is approximately 0.6554.

Hence , the probability of a data value being between 48 and 52 given by

P(48 ≤ X ≤ 52) ≈ 0.6554 - 0.3446 ≈ 0.3108 or 31.1%

Hence , the probability is 31.1 %

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There is no general rule for the sequence as this is neither an arithmetic sequence nor a quadratic sequence.

If this is an arithmetic sequence, then there would be a constant difference between the consecutive terms.

Difference between term 2 and term 1 : 5 - 2 = 3

Difference between term 3 and term 2 : 7 - 5 = 2

Difference between term 4 and term 3 : 11 - 7 = 4

This is therefore not an arithmetic sequence.

We can check to see if it is quadratic with the second difference :

Difference between the second and first differences: 2 - 3 = -1

Difference between the third and second differences: 4 - 2 = 2

These are still not constant which means that there is no general rule given the terms.

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The required ratio of vanilla cones to chocolate cones is 3:4.

To find the ratio of vanilla cones to chocolate cones, we need to divide the number of vanilla cones by the number of chocolate cones:

The ratio of vanilla cones to chocolate cones = Number of vanilla cones / Number of chocolate cones

The ratio of vanilla cones to chocolate cones = 60 / 80

Simplifying the fraction, we get:

The ratio of vanilla cones to chocolate cones = 3/4

Therefore, the ratio of vanilla cones to chocolate cones is 3:4.

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Answer:

[tex]\Large \textsf{$\boxed{\boxed{-1.702\leq x\leq4.702}}$}[/tex]

Step-by-step explanation:

The inequality required to solve:

[tex]\Large \textsf{$\Rightarrow$\ } \boxed{\Large \textsf{$x^2-3x-4\leq 4$}}[/tex]

[tex]\large \textsf{First, subtract 4 from both sides:}\\ \\\large \textsf{$\Rightarrow x^2-3x-8\leq 0$}\\\\\large \textsf{This is in the form of a quadratic equation, where $ax^2+bx+c=0$}\\\large \textsf{We need to consider the LHS as an equation, and solve for $x$:}\\\\\large \textsf{Using the quadratic formula:}\\\\\large \textsf{$\boxed{x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}}$} \large \textsf{ , where $ax^2+bx+c=0$}\\\\[/tex]

[tex]\large \textsf{$x=\frac{-(-3)\pm\sqrt{(-3)^2-4(1)(-4)}}{2(1)}$}\\\\\large \textsf{$\therefore x=-1.702, 4.702$}[/tex]

Now, this is not the solution of the inequality yet. These are the x-intercepts (roots) of the graph of y = x² - 3x - 8. From the graph, we can apply the inequality sign, and solve for values below or equal to y = 0.

[see attached diagram of graph]

[tex]\large \textsf{From the graph, we can conclude that:}\\\\\Large \textsf{$\boxed{\boxed{-1.702\leq x\leq4.702}}$}[/tex]

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Answer:

approximately 6.4 meters

An equation that describes the relationship shown in the table is y = 2x + 1.

In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical equation (formula):

y - y₁ = m(x - x₁)

Where:

First of all, we would find the slope of this line;

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

Slope (m) = (11 - 7)/(5 - 3)

Slope (m) = 4/2

Slope (m) = 2.

At data point (3, 7) and a slope of 2, a linear equation for this line can be calculated by using the point-slope form as follows:

y - y₁ = m(x - x₁)

y - 7 = 2(x - 3)

y = 2x - 6 + 7

y = 2x + 1

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Complete Question:

The table snows a linear relationship between x and y.

x     y

3     7

5     11

10    21

Create an equation that describes the relationship shown in the table.

Move the correct answer to each box. Not all answer will be used.

The rate of discount on the music system during the sale is 13.58%.

The rate of discount is the percentage reduction in the original price of a product during a sale.

The regular cost of the music system is $80,999 and it was sold during the sale for $69,999.

The rate of discount, we first need to find the amount of discount.

We can do this by subtracting the sale price from the regular price:

Discount = Regular price - Sale price

Discount = $80,999 - $69,999

Discount = $11,000

So the discount on the music system during the sale is $11,000.

Next, we can calculate the rate of discount as a percentage of the regular price.

We can use the formula:

Discount rate = (Discount / Regular price) x 100%

Plugging in the values we have:

Discount rate = ($11,000 / $80,999) x 100%

Discount rate = 0.1358 x 100%

Discount rate = 13.58%

The music system was discounted by 13.58% during the sale, resulting in a sale price of $69,999.

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Answer:

D

Step-by-step explanation:

The length of the major arc for the given circle, in terms of pi, is:

L = π*2.16 yards.

We know that an arc defined by an angle x on a circle of radius R has a length:

L = (x/360°)*2*π*R

where π = 3.14

Here we know that the angle DCE is 100°, and the total angle of a circle is 360°, then the angle of the arc DFE is 360° - 100° = 260°

And the radius of the circle is R = 3yd, then the length in terms of pi is:

L = (260°/360)*2*π*3yd

L = π*2.16 yards.

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The bounds for the length of the rectangular playing field are 5.9 meters ≤ length ≤ 44.1 meters. This answer is more than 100 words.

To solve this problem, we first need to know the formula for the perimeter of a rectangular field, which is 2(length + width). Since the perimeter of the field is given as 100 meters, we can write the equation as 2(length + width) = 100.
We also know that the area of a rectangular field is given by the formula length x width. We are given that the field must have an area of at least 500 square meters, so we can write the inequality length x width ≥ 500.
Now we need to find the bounds for the length. We can use the equation for the perimeter to solve for the width in terms of the length: width = (100 - 2length)/2. Substituting this expression for width into the inequality for the area, we get length x (100 - 2length)/2 ≥ 500.
Multiplying both sides by 2 and simplifying, we get length(100 - 2length) ≥ 1000. Expanding the left side, we get 100length - 2length^2 ≥ 1000. Rearranging and factoring, we get -2(length^2 - 50length + 500) ≥ 0.
Dividing both sides by -2 and flipping the inequality, we get length^2 - 50length + 500 ≤ 0. This quadratic inequality can be solved by finding the roots of the quadratic equation length^2 - 50length + 500 = 0. The roots are approximately 5.9 and 44.1.
Since the length of a field cannot be negative, the lower bound for the length is 5.9 meters. To satisfy the inequality for the area, the upper bound for the length is 44.1 meters. Therefore, the length of the rectangular playing field must be between 5.9 and 44.1 meters to have a perimeter of 100 meters and an area of at least 500 square meters.
In summary, the bounds for the length of the rectangular playing field are 5.9 meters ≤ length ≤ 44.1 meters.

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The approximate probability of having 11 or more serious Vespa scooter accidents in Redondo Beach this summer break is approximately 0.3085.

To approximate the probability of having 11 or more serious Vespa scooter accidents in Redondo Beach during the summer break, we can use the Central Limit Theorem (CLT). The CLT states that the sum or average of a large number of independent and identically distributed random variables will be approximately normally distributed, regardless of the underlying distribution.

In this case, we can consider the number of serious Vespa scooter accidents as a random variable following a Poisson distribution with an average of 9 accidents during the summer break. The Poisson distribution can be approximated by a normal distribution when the average is sufficiently large.

To apply the CLT, we need to calculate the mean and standard deviation of the Poisson distribution:

Mean (μ) = average = 9

Standard Deviation (σ) = square root of average = √9 = 3

Now, we want to find the probability of having 11 or more accidents. We can use the normal approximation by considering the continuity correction. Since the Poisson distribution is discrete, we adjust the boundaries by subtracting 0.5:

P(X ≥ 11) ≈ P(X > 10.5)

Now, we standardize the value using the Z-score formula:

Z = (X - μ) / σ

Z = (10.5 - 9) / 3 ≈ 0.5

Next, we find the probability of Z being greater than 0.5 using a standard normal distribution table or calculator:

P(Z > 0.5) ≈ 0.3085

Therefore, the approximate probability of having 11 or more serious Vespa scooter accidents in Redondo Beach this summer break is approximately 0.3085.

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The next terms of the sequences 1; 2; 4; 7; 11; ... and -3; 0; 3; 6; ... are 16, 22 and 9, 12.

The given sequence is: 1; 2; 4; 7; 11; ...

To get the next term, we need to observe the differences between consecutive terms:

2-1 = 1; 4-2 = 2; 7-4 = 3; 11-7 = 4

The differences are increasing by 1 in each step. So, to get the next term, we add 5 to the last term:

11 + 5 = 16

Similarly, to get the term after that, we add 6 to the previous term:

16 + 6 = 22

Therefore, the next two terms of the sequence are 16 and 22, and the term-to-term rule is to add consecutive integers starting from 1 to the previous term.

The given sequence is: -3; 0; 3; 6; ...

To get the next term, we add 3 to the previous term:

6 + 3 = 9

Similarly, to get the term after that, we add 3 to the previous term:

9 + 3 = 12

Therefore, the next two terms of the sequence are 9 and 12, and the term-to-term rule is to add 3 to the previous term.

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The slope of the line on the graph is positive

The slope of the equation is -1/2

The slope of the equation is 3/2

From the question, we have the following parameters that can be used in our computation:

The graph

From the graph, we can see that

As the x values increases, the y values increases

And vice versa

This means that the slope of the line is positive

Here, we have

x + 2y = 6

Rewrite as

2y = -x + 6

So, we have

y = -x/2 + 3

The slope of the line is the coeffient of x

So, we have

Slope = -1/2

Also, we have

y = 3/2x + 3

The slope of the line is the coeffient of x

So, we have

Slope = 3/2

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Rounding to the nearest tenth, the length of side k is approximately 23.3 feet. The answer is 23.3 ft.

To solve for the length of side k using the Law of Sines, we can use the formula:

sin(K) / k = sin(J) / j

Given that ∠J measures 40°, ∠K measures 90°, and side j is 15 feet, we can substitute these values into the equation:

sin(90°) / k = sin(40°) / 15

Since sin(90°) = 1, the equation simplifies to:

1 / k = sin(40°) / 15

To find k, we need to isolate it on one side of the equation. We can achieve this by taking the reciprocal of both sides:

k = 15 / sin(40°)

Using a calculator, we can evaluate sin(40°) ≈ 0.6428:

k ≈ 15 / 0.6428 ≈ 23.328.

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Answer:

Step-by-step explanation:

the answer is 3 first do 1+1=2 -1=1+2=3

The standard error of the difference in sample proportions is 0.0161.

Given that an advocacy organization surveys 960 Canadians and 192 of them reported being born in another country.

Similarly, 170 out of 1250 Americans reported being foreign born,

P₁ = 192/960 = 0.2

P₂ = 170/1250 = 0.136

The standard error of the difference in sample proportions =

[tex]\sqrt{\frac{p_1(1-p_1)}{n_1} + \frac{p_2(1-p_2)}{n_2}[/tex]

[tex]\sqrt{\frac{0.2(1-0.2)}{960} + \frac{0.136(1-0.136)}{1250}[/tex] [tex]\approx 0.0161[/tex]

Hence the standard error of the difference in sample proportions is 0.0161.

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The upper limit of the 90% confidence interval for the population mean is 104.11.

Using the formula for a 90% confidence interval for the population mean, we have:
Upper limit = mean + (z-value)*(standard deviation/square root of sample size)
where the z-value for a 90% confidence interval is 1.645.
Plugging in the values from the given information, we get:
Upper limit = 100 + (1.645)*(10/square root of 16)
Upper limit = 100 + 4.1125
Upper limit = 104.11 (rounded to two decimal places)


A 90% confidence interval is an interval that, with a 90% probability, contains the true value of the population mean. To find the upper limit of the interval, we need to use the formula that takes into account the sample mean, sample standard deviation, sample size, and the z-value corresponding to the desired confidence level.

Given a sample size of 16 with a mean and standard deviation of 100 and 10 respectively, the upper limit of the 90% confidence interval is calculated to be 104.11.

This means that we are 90% confident that the true value of the population mean lies between 100 and 104.11.


The upper limit of the 90% confidence interval for the population mean, given a random sample of 16 values with a mean and standard deviation of 100 and 10 respectively, is 104.11.

This means that we can be 90% confident that the true value of the population mean lies between 100 and 104.11.

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The rate of a molecule's migration through an electric field during electrophoresis is determined by factors such as the molecule's size, shape, and charge, as well as the properties of the electric field and the medium through which the molecule is moving.

The rate of a molecule's migration through an electric field during electrophoresis is determined by several factors. The size and shape of the molecule play a significant role. Larger molecules will migrate more slowly than smaller molecules, and molecules with more complex shapes will also migrate more slowly due to increased resistance to movement through the gel or solution. Secondly, the charge of the molecule is also a determining factor. Molecules with a higher charge will migrate more quickly than those with a lower charge.

The strength of the electric field and the properties of the gel or solution used for electrophoresis can also affect the rate of migration. The rate of a molecule's migration through an electric field during electrophoresis is a complex process with multiple factors influencing the final outcome.

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APA format was developed to create a uniform standard of writing.

APA format, which stands for the American Psychological Association format, was established to provide a standardized structure and style for writing scientific papers in the social sciences. It ensures consistency and uniformity in the presentation of research papers, allowing researchers to communicate their work effectively and facilitate the dissemination of knowledge. APA format includes guidelines for organizing the content, citing sources, formatting references, and presenting data. By following these guidelines, researchers can promote clarity, accuracy, and professionalism in their written work. The adoption of APA format helps maintain a common writing style across various disciplines, enhancing readability, facilitating comprehension, and ensuring that scholarly work adheres to established conventions.

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The original equation  provided (74.94 * 1000), we can see that multiplying 74.94 by 1,000 is equivalent to adding three zeros to the end of the number. Now let's consider the number 10 with a 3 exponent, which we know is equal to 1,000.  So, the answer to the equation is simply 74,940.

we need to understand the concept of exponents and how they relate to the number of zeros in a number. An exponent is a way of showing how many times a number should be multiplied by itself. For example, 10 raised to the power of 3 (written as 10^3) means 10 multiplied by itself three times, which is equal to 1,000.
Now let's consider the number 10 with a 3 exponent, which we know is equal to 1,000. When this number is written without an exponent, we can simply write it as 1 followed by three zeros, which is 1,000. Therefore, the answer to your question is that the number 10 with a 3 exponent has three zeros when it is written without an exponent.
When you multiply 74.94 by 1000, you are essentially moving the decimal point three places to the right because the number 10 with a 3 exponent (10^3) has three zeros when it is written without an exponent.
1. Identify the number to be multiplied (74.94) and the exponent of 10 (3).
2. Convert 10^3 to its standard form, which gives us 1000 (three zeros).
3. Move the decimal point of the number (74.94) three places to the right due to the three zeros in 1000.
So, 74.94 * 1000 = 74940.

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The original equation  provided (74.94 * 1000), we can see that multiplying 74.94 by 1,000 is equivalent to adding three zeros to the end of the number. Now let's consider the number 10 with a 3 exponent, which we know is equal to 1,000.  So, the answer to the equation is simply 74,940.

The concept of exponents and how they relate to the number of zeros in a number. An exponent is a way of showing how many times a number should be multiplied by itself. For example, 10 raised to the power of 3 (written as 10^3) means 10 multiplied by itself three times, which is equal to 1,000.

Now let's consider the number 10 with a 3 exponent, which we know is equal to 1,000. When this number is written without an exponent, we can simply write it as 1 followed by three zeros, which is 1,000. Therefore, the answer to your question is that the number 10 with a 3 exponent has three zeros when it is written without an exponent.

When you multiply 74.94 by 1000, you are essentially moving the decimal point three places to the right because the number 10 with a 3 exponent (10^3) has three zeros when it is written without an exponent.

1. Identify the number to be multiplied (74.94) and the exponent of 10 (3).

2. Convert 10^3 to its standard form, which gives us 1000 (three zeros).

3. Move the decimal point of the number (74.94) three places to the right due to the three zeros in 1000.

So, 74.94 * 1000 = 74940.

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Possible numbers: 345, 354, 435, 453, 534, 543.

345+354+435+453+534+543=2664