Suppose you used the Law of Sines and wrote a=3sin 22°/sin 45° . Is that the same equation as a=3 sin(22/45)° ? Explain.

Answer:

y = [tex]\frac{1}{8}[/tex] x - [tex]\frac{11}{8}[/tex]

Step-by-step explanation:

Helping in the name of Jesus.

The square root of a negative number is undefined in the real number system, there are no solutions for sin(θ) in the given domain 0 ≤ θ < 2π. Therefore, the equation 2sin(π/2 - θ) = sin(-θ) has no solution in this domain.

To solve the trigonometric equation 2sin(π/2 - θ) = sin(-θ) for θ, we can simplify and manipulate the equation using trigonometric identities.

Let's start by simplifying the equation:

2sin(π/2 - θ) = sin(-θ)

First, we'll use the identity sin(-θ) = -sin(θ):

2sin(π/2 - θ) = -sin(θ)

Next, we'll apply the angle subtraction identity sin(π/2 - θ) = cos(θ):

2cos(θ) = -sin(θ)

Now, we have a trigonometric equation with cosine and sine terms. To solve for θ, we'll bring all terms to one side:

2cos(θ) + sin(θ) = 0

Now, we'll use the Pythagorean identity sin^2(θ) + cos^2(θ) = 1 to express cos(θ) in terms of sin(θ):

2(√1 - sin^2(θ)) + sin(θ) = 0

2√1 - 2sin^2(θ) + sin(θ) = 0

Rearranging the equation:

2sin^2(θ) - sin(θ) + 2√1 = 0

Now, we have a quadratic equation in terms of sin(θ). Let's solve it:

Using the quadratic formula: sin(θ) = (-b ± √(b^2 - 4ac)) / (2a)

a = 2, b = -1, c = 2√1

sin(θ) = (-(-1) ± √((-1)^2 - 4(2)(2√1))) / (2(2))

sin(θ) = (1 ± √(1 - 16√1)) / 4

sin(θ) = (1 ± √(1 - 16)) / 4

sin(θ) = (1 ± √(-15)) / 4

Since the square root of a negative number is undefined in the real number system, there are no solutions for sin(θ) in the given domain 0 ≤ θ < 2π. Therefore, the equation 2sin(π/2 - θ) = sin(-θ) has no solution in this domain.

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The correct statement is: The absolute frequency of Vanilla is 3 and its relative frequency is 0.33.

In the given ice cream orders, Vanilla appears 3 times. This count of 3 represents the absolute frequency of Vanilla. Absolute frequency refers to the actual number of occurrences of a particular observation or event. To calculate the relative frequency of Vanilla, we divide its absolute frequency by the total number of observations. In this case, the total number of ice cream orders is 12. Thus, the relative frequency of Vanilla is 3/12, which simplifies to 0.25 or 25%.

Relative frequency represents the proportion or percentage of the total observations that a specific event or observation constitutes. It provides a standardized measure that allows for comparison across different data sets. In this context, Vanilla comprises 25% of the ice cream orders, indicating its relative popularity compared to other flavors in the sample.

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To determine if any lines are parallel based on the given information, we need to analyze the relationship between angles ∠8 and ∠13.

If the sum of the measures of two angles is 180 degrees, it indicates that the angles are supplementary. In other words, they are a pair of angles that add up to a straight angle. If ∠8 and ∠13 are supplementary, it suggests that they are either adjacent angles or a linear pair of angles.

Based on this information, we cannot directly conclude whether any lines are parallel. The fact that the sum of ∠8 and ∠13 is 180 degrees does not provide enough information to determine the relationship between lines or angles. Additional information or context about the lines or angles involved would be needed to make a conclusion about parallel lines. Therefore, in this case, no specific postulate or theorem can be applied to justify the parallelism of any lines based solely on the given equation.

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The exact value of tan 30° is √(1/3), which is determined by using a half-angle identity.

To find the exact value of tan 30° using a half-angle identity, we can use the half-angle identity for tangent: tan(θ/2) = ±√((1 - cosθ) / (1 + cosθ))

In this case, θ = 60°, so we can substitute it into the formula:

tan(30°/2) = ±√((1 - cos 60°) / (1 + cos 60°))

Now, let's find the values of cos 60° and substitute them: cos 60° = 1/2

tan(30°/2) = ±√((1 - 1/2) / (1 + 1/2))

Simplifying the expression: tan(30°/2) = ±√((1/2) / (3/2))

tan(30°/2) = ±√(1/3)

Since tan is positive in the first and third quadrants, the final exact value of tan 30° is: tan 30° = √(1/3)

Therefore, the exact value of tan 30° is √(1/3).

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The volume of the square pyramid with a height of 14 meters and a base with 8-meter side lengths is approximately 896 cubic meters, rounded to the nearest tenth.

The volume of a pyramid can be calculated using the formula V = (1/3) * base area * height. In this case, the square pyramid has a base with side lengths of 8 meters, so the base area is calculated as follows:

Base Area = side length^2 = 8^2 = 64 square meters

The height of the pyramid is given as 14 meters.

Using the volume formula, we can now calculate the volume of the pyramid: V = (1/3) * base area * height

 = (1/3) * 64 * 14

 = 2688 / 3

 ≈ 896 cubic meters

Therefore, the volume of the square pyramid with a height of 14 meters and a base with 8-meter side lengths is approximately 896 cubic meters, rounded to the nearest tenth.

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he distance between the foci of an ellipse with major axis length 10 units and minor axis length 6 units is 8 units.

Let's assume the length of the major axis is 2a and the length of the minor axis is 2b.

The distance between the foci, represented by 2c, can be calculated using the equation c² = a² - b².

Let's say the length of the major axis is 10 units (2a = 10) and the length of the minor axis is 6 units (2b = 6).

Substituting these values into the equation, we have:
c² = (10/2)² - (6/2)²
c² = 5² - 3²
c² = 25 - 9
c² = 16

Taking the square root of both sides to find c, we have:
c = √16
c = 4

Therefore, the distance between the foci of the ellipse is 2c = 2(4) = 8 units.

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Yes, if 20 cards are randomly selected from a standard 52-card deck, at least 2 cards must be of the same denomination.

Yes, if 20 cards are randomly selected from a standard 52-card deck, at least 2 cards must be of the same denomination.  This is because there are only 13 denominations (2 through 10, J, Q, K, A) in a standard deck, and since you are selecting 20 cards, there are more cards being chosen than there are unique denominations. According to the pigeonhole principle, if you have more pigeons (cards) than pigeonholes (unique denominations), there must be at least one pigeonhole (denomination) with more than one pigeon (card). Therefore, there must be at least 2 cards of the same denomination when 20 cards are randomly selected from a standard 52-card deck.

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The account pays an interest rate of 8%, there will be **$20,779.30** in the account immediately after your grandmother makes the deposit on your 18th birthday.

This is calculated using the compound interest formula, with 18 years as the number of years, 8% as the interest rate, and $5,200 as the annual deposit.

The compound interest formula is:

A = [tex]P(1 + r)^t[/tex]

where:

* A is the final amount in the account

* P is the principal amount (the initial deposit)

* r is the interest rate

* t is the number of years

In this case, the principal amount is $5,200, the interest rate is 8%, and the number of years is 18. So, the final amount in the account is:

A = [tex]5200(1 + 0.08)^{18}[/tex] = 20779.30

This means that there will be **$20,779.30** in the account immediately after your grandmother makes the deposit on your 18th birthday.

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Since the polynomial P(x) has rational coefficients, its complex roots must occur in conjugate pairs. This means that if 1 - i is a root, then its conjugate, 1 + i, must also be a root of P(x).

Therefore, the additional root of P(x) would be 1 + i. Now, if 5 is also a root of P(x), then we can conclude that the polynomial P(x) can be factored as (x - 1 + i)(x - 1 - i)(x - 5), since the roots of a polynomial correspond to its factors. Thus, the additional roots of P(x) are 1 + i and 5 To summarize, the roots of the polynomial P(x), given the roots 1 - i and 5, are 1 - i, 1 + i, and 5.

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Answer:

Britta will accrue approximately $535.63 in interest during the 2.5-year non-payment period.

To calculate the interest accrued during the 2.5-year non-payment period, we can use the formula for simple interest:

Interest = Principal * Rate * Time

In this case:

Principal = $5,000 (the loan amount)

Rate = 4.29% (expressed as a decimal, 0.0429)

Time = 2.5 years

Plugging in these values into the formula, we have:

Interest = $5,000 * 0.0429 * 2.5

Calculating the interest, we get:

Interest = $535.63

The simplified form of the trigonometric expression (1 - sin θ)(1 + sin θ) csc²θ + 1 is cos²θ.

We can start by simplifying the expression (1 - sin θ)(1 + sin θ) by using the identity (a - b)(a + b) = a² - b². Applying this identity, we have (1 - sin θ)(1 + sin θ) = 1² - (sin θ)² = 1 - sin²θ.

Next, we simplify the term csc²θ, which is the reciprocal of the square of the sine function. The reciprocal of sin θ is csc θ, so csc²θ can be rewritten as (1/sin θ)² = 1/sin²θ.

Combining the simplified expressions, we have (1 - sin²θ)(1/sin²θ) + 1. Notice that (1 - sin²θ) is equivalent to cos²θ using the Pythagorean identity sin²θ + cos²θ = 1.

Therefore, the final simplified expression is cos²θ + 1.

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Based on the given conditions, the Boolean variables that satisfy the given conditions and give a Boolean product of 1 are x = y = 1 and z = 0.

To determine the boolean variables or their complements that satisfy the given conditions, we need to find combinations that yield a boolean product of 1. In other words, we are looking for configurations where the logical AND operation between the variables or their complements results in a value of 1.

Given the conditions x = y = 0 and z = 1, we can evaluate the different possibilities. Since x and y are both 0, their complements would be 1. Therefore, x = y = 1 satisfies the conditions. Additionally, since z is already 1, its complement would be 0. Hence, z = 0 also satisfies the conditions.

By assigning x = y = 1 and z = 0, we can see that the Boolean product (x AND y AND z) would be 1, satisfying the given conditions.

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Answer: B. 8/15

Step-by-step explanation: Since it’s asking for tangent K, we know it’s opposite over adjacent. The hypotenuse in this case is 51. The opposite is 24 and the adjacent is 45 for tan K. Using opposite over hypotenuse, we get 24/45 which is simplified to 8/15.

The radius of a circle of area 112 sq. inches, after rounding off, is approximately equal to 6 inches.

We use the general formula for the area of a circle, which is defined as:

A = πr²

where 'r' is the radius of the circle.

Since we need to round off the decimal part, it is better to take π = 3.14 rather than 22/7, to avoid errors.

Also, note that the radius will be obtained in inches, corresponding to the units of area given.

By substituting the values given in the equation, we get:

112 = 3.14 * r²

r² = 112/3.14

r = √35.668

r = 5.97

After rounding off,

r ≅ 6 inches or 15 cm

Thus, the radius of the given circle is about 6 inches.

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The center, vertices, and foci of the given ellipse are as follows:

Center: (-7, -1)

Vertices: (-7, -13) and (-7, 11)

Foci: (-7, -7) and (-7, 5)

The general equation for an ellipse centered at (h, k) with semi-major axis "a" and semi-minor axis "b" is:

(x - h)² / a² + (y - k)² / b² = 1

Comparing this with the given equation, we can see that the center of the ellipse is at (-7, -1).

The semi-major axis "a" is the square root of the denominator of the x-term, which in this case is √225 = 15. So, the vertices will be located 15 units above and below the center. Therefore, the vertices are (-7, -1 - 15) = (-7, -16) and (-7, -1 + 15) = (-7, 14).

The semi-minor axis "b" is the square root of the denominator of the y-term, which in this case is √144 = 12. So, the foci will be located √(a² - b²) units away from the center along the major axis. Using the formula, we find the distance to be √(15² - 12²) = √(225 - 144) = √81 = 9. Therefore, the foci are (-7, -1 - 9) = (-7, -10) and (-7, -1 + 9) = (-7, 8).

In summary:

Center: (-7, -1)

Vertices: (-7, -16) and (-7, 14)

Foci: (-7, -10) and (-7, 8)

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The solutions to the equation 5x³ = 5x² + 12x are:

x = 0, x = (1 + √10.6) / 2, and x = (1 - √10.6) / 2.

The equation 5x³ = 5x² + 12x can be solved as follows:

Divide both sides of the equation by 5x:

x³ = x² + 2.4x

Rearrange the equation to bring all terms to one side:

x³ - x² - 2.4x = 0

Now, factor out an x from the left side:

x(x² - x - 2.4) = 0

To find the roots of the equation, set each factor equal to zero and solve for x:

1. x = 0

This gives us one solution, x = 0.

2. x² - x - 2.4 = 0

We can solve this quadratic equation by factoring, completing the square, or using the quadratic formula. Let's use the quadratic formula:

x = (-b ± √(b² - 4ac)) / (2a)

For our equation, a = 1, b = -1, and c = -2.4. Substituting these values into the formula, we get:

x = (-(-1) ± √((-1)² - 4(1)(-2.4))) / (2(1))

x = (1 ± √(1 + 9.6)) / 2

x = (1 ± √10.6) / 2

So, the remaining solutions are given by:

x = (1 + √10.6) / 2 and x = (1 - √10.6) / 2.

Therefore, the solutions to the equation 5x³ = 5x² + 12x are:

x = 0, x = (1 + √10.6) / 2, and x = (1 - √10.6) / 2.

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The equation of line ℓ is y = -x + 5 in both slope-intercept form and point-slope form.

To find the equation of a line perpendicular to line k, we need to determine its slope. The given line k has an equation y = x + 6, which is in slope-intercept form (y = mx + b) where the slope (m) is 1.

For a line perpendicular to line k, the slope will be the negative reciprocal of the slope of line k. Therefore, the slope of line ℓ will be -1.

We are also given a point (1, 4) through which line ℓ passes. Let's denote this point as (x₁, y₁), where x₁ = 1 and y₁ = 4.

Slope-intercept form:

The equation of line ℓ in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Using the given slope (-1) and the point (1, 4), we can substitute the values into the slope-intercept form equation and solve for b:

4 = (-1)(1) + b

4 = -1 + b

b = 4 + 1

b = 5

So, the equation of line ℓ in slope-intercept form is y = -x + 5.

Point-slope form:

The equation of line ℓ in point-slope form is y - y₁ = m(x - x₁), where m is the slope and (x₁, y₁) are the coordinates of the given point.

Using the slope (-1) and the point (1, 4), we can substitute the values into the point-slope form equation:

y - 4 = (-1)(x - 1)

y - 4 = -x + 1

y = -x + 1 + 4

y = -x + 5

So, the equation of line ℓ in point-slope form is y = -x + 5.

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To determine the best-fitting model for a given set of data, we can consider a linear, quadratic, and cubic model and assess their fits. The model that provides the smallest error or highest coefficient of determination (R-squared) would be considered the best fit.

A linear model represents a straight line and can be expressed as y = mx + b, where m is the slope and b is the y-intercept. A quadratic model represents a parabolic curve and can be written as y = ax² + bx + c, where a, b, and c are coefficients. A cubic model represents a curve with more flexibility and can be written as y = ax³ + bx² + cx + d, where a, b, c, and d are coefficients. To determine the best-fitting model, we can calculate the error or R-squared for each model and compare them. Lower errors or higher R-squared values indicate better fits. It is important to note that the choice of the best model also depends on the nature of the data and the underlying relationships.

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The quadratic equation has two distinct solutions: x = 3 and x = 1/4, which satisfy the equation 4x² - 14x + 7 = 4 - x.

To solve the quadratic equation 4x² - 14x + 7 = 4 - x, we can follow these steps:

1. Move all the terms to one side to set the equation equal to zero:

  4x² - 14x + x + 7 - 4 = 0

  4x² - 13x + 3 = 0

2. Solve the quadratic equation by factoring, completing the square, or using the quadratic formula. In this case, let's use the quadratic formula:

  x = (-b ± √(b² - 4ac)) / (2a)

  For our equation, a = 4, b = -13, and c = 3.

  Substituting these values into the quadratic formula:

  x = (-(-13) ± √((-13)² - 4 * 4 * 3)) / (2 * 4)

  x = (13 ± √(169 - 48)) / 8

  x = (13 ± √121) / 8

  x = (13 ± 11) / 8

3. Simplify the solutions:

  Case 1: x = (13 + 11) / 8

    x = 24 / 8

    x = 3

  Case 2: x = (13 - 11) / 8

    x = 2 / 8

    x = 1/4

Therefore, the solutions to the quadratic equation 4x² - 14x + 7 = 4 - x are x = 3 and x = 1/4.

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For the professor's randomized controlled trial (RCT) to be valid, the following must be true: the average age of students in group B should be similar to group A, the average characteristics of the students in both groups should be statistically similar

In order for the professor's experiment to be a valid RCT, several conditions must be met. First, the average age of students in group B should be similar to group A, meaning that there should not be a significant statistical difference between the average ages of the two groups. While the actual average age may differ slightly, it should not be significantly different.

Second, the average characteristics of the students in both groups should be statistically similar. This ensures that any differences observed between the groups can be attributed to the treatment or intervention being tested, rather than inherent differences in the characteristics of the students.

Third, the professor must have randomly assigned students to the groups. Random assignment helps minimize selection bias and ensures that any differences observed between the groups are not due to systematic differences in the individuals assigned to each group.

Regarding the type of data collected in the RCT, the professor likely collected experimental data. An RCT involves intentionally manipulating an independent variable (in this case, group assignment) to observe its effect on a dependent variable (the outcome being measured). This differs from other types of data such as panel data (data collected from the same individuals over time), time series data (data collected over regular intervals), and observational data (data collected without intervention or control).

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They would need to save approximately $4,144.49 each year to reach their goal of $140,000 by your 18th birthday. They would need to save approximately $8,683.57 each year to reach their new goal of $180,000 by your 18th birthday, assuming it takes five years to graduate.

To calculate the amount they would have to save each year to reach their goal of $140,000, we can use the concept of future value of an ordinary annuity.

a. The future value of an ordinary annuity formula is given by:

FV = P * [(1 + r) ^ n - 1] / r

Where:

FV = Future value (goal amount) = $140,000

P = Amount saved each year

r = Interest rate per period = 5% = 0.05

n = Number of periods = 18 - 1 = 17

Substituting these values into the formula, we can solve for P:

$140,000 = P * [(1 + 0.05) ^ 17 - 1] / 0.05

Simplifying the equation, we have:

P = $140,000 * 0.05 / [(1.05 ^ 17) - 1]

Using a calculator, we find that P is approximately $4,144.49.

Therefore, they would need to save approximately $4,144.49 each year to reach their goal of $140,000 by your 18th birthday.

b. If they decide to have $180,000 saved instead and extend the saving period to five years, we can use the same formula and solve for the new amount they need to save each year.

$180,000 = P * [(1 + 0.05) ^ 5 - 1] / 0.05

Simplifying the equation, we have:

P = $180,000 * 0.05 / [(1.05 ^ 5) - 1]

Using a calculator, we find that P is approximately $8,683.57.

Therefore, they would need to save approximately $8,683.57 each year to reach their new goal of $180,000 by your 18th birthday, assuming it takes five years to graduate.

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The simplified expression of 4 y-(2 y+3 x)-5 x is -y-8 x. To combine like terms, we identify the terms that have the same variable and the same exponent. In this case, the like terms are 4 y, -2 y, and -5 x. We combine these terms by adding or subtracting their coefficients.

The coefficient of 4 y is 4, the coefficient of -2 y is -2, and the coefficient of -5 x is -5. When we add these coefficients, we get -1. Therefore, the simplified expression is -y-8 x.

4 y-(2 y+3 x)-5 x = 4 y - 2 y - 3 x - 5 x

= (4 - 2 - 5) y - (3 + 5) x

= -y - 8 x

The first step is to remove the parentheses. We can do this by adding a negative sign to each term inside the parentheses.

The second step is to combine the terms that have the same variable and the same exponent. In this case, the like terms are 4 y, -2 y, and -5 x. We combine these terms by adding or subtracting their coefficients.

The third step is to simplify the expression by combining the numeric terms. In this case, the simplified expression is -y-8 x.

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Answer:

Step-by-step explanation:

The correct option is C. [tex]x\geq 11[/tex] or [tex]x\leq 1[/tex].

The given exprassion, [tex]|x-6|\geq 5[/tex]

Now using thr proparties of modulas function,

when [tex]x\geq 6[/tex], then

[tex]|x-6|\geq 5\\\\x-6\geq5\\\\x\geq11[/tex]

and when [tex]x < 6[/tex], then

[tex]|x-6|\geq 5\\\\-x+6\geq5\\-x\geq-1\\x\leq 1[/tex]

Therefore from both the cases we can see the correct option is C.

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The magnitude of the resultant vector, rounded to the nearest hundredth, is approximately 12.65 units.

To find the magnitude of the resultant vector, we can use the Pythagorean theorem.

The Pythagorean theorem states that for a right triangle, the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.

In this case, the two sides of the triangle represent the components of the vector (10, 4) and (-14, -16).

Let's denote the components of the vector (10, 4) as x₁ and y₁, and the components of the vector (-14, -16) as x₂ and y₂.

Using the Pythagorean theorem, the magnitude (R) of the resultant vector can be calculated as:

R = [tex]\sqrt{((x_1 + x_2)^{2} + (y_1 + y)2)^{2} )}[/tex]

Substituting the given values:

R = [tex]\sqrt{t((10 + (-14))^{2} + (4 + (-16))^{2} )}[/tex]

= [tex]\sqrt{((-4)^{2} + (-12)^{2} )}[/tex]

= [tex]\sqrt{(16 + 144)}[/tex]

= [tex]\sqrt{(160)}[/tex]

≈ 12.65

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The solution to the equation -58x - 26 = 8x - 230.6 is x = 3.1.

Given the equation in the question:

-58x - 26 = 8x - 230.6

To solve the equation -58x - 26 = 8x - 230.6, rearrange the terms to isolate the variable x.

Subtract 8x from both sides:

-58x - 8x - 26 = 8x - 8x - 230.6

Add 26 to both sides:

-58x - 8x - 26 + 26 = 8x - 8x - 230.6 + 26

Combine like terms:

-66x - 26 + 26 = -230.6 + 26

-66x = -230.6 + 26

-66x = -204.6

To solve for x, we divide both sides of the equation by -66:

-66x / -66= -204.6 / -66

x = -204.6 / -66

x = 3.1

Therefore, the value of x is 3.1.

Option C) 3.1 is the correct answer.

The question is:

Solve the equation, then check your solution.

Negative 58 x minus 26 = 8 x minus 230.6

-58x - 26 = 8x - 230.6

a. 3.17,  b. 3.3, c. 3.1

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Event 9 ("The sum is odd") and Event 10 ("The difference is 1") are not mutually exclusive,

while Event 11 ("The sum is a multiple of x") depends on the specific value of x for its mutual exclusivity to be determined.

9. The events "The sum is odd" and "The sum is less than 5" are not mutually exclusive because there are values of the sum (e.g., 3) that satisfy both conditions simultaneously.

10. The events "The difference is 1" and "The sum is even" are mutually exclusive. The difference between two numbers can only be 1 if their sum is odd, and vice versa. Therefore, the events cannot occur simultaneously.

11. The event "The sum is a multiple of x" depends on the specific value of x. Without knowing the value of x, it cannot be determined whether it is mutually exclusive with other events. For example, if x is 2, then the event "The sum is a multiple of 2" would be mutually exclusive with "The sum is odd" but not with "The sum is less than 5."

Therefore, event 9 is not mutually exclusive, event 10 is mutually exclusive, and the mutual exclusivity of event 11 depends on the specific value of x.

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Complete Question:

Two fair number cubes are rolled. State whether the following events are mutually exclusive. Explain your reasoning. The numbers are equal

9. The sum is odd. The sum is less than 5. ________

10. The difference is 1. The sum is even. ________

11. The sum is a multiple of _______

The expression -2c + 6d in the ordered pair notation is (16,-16).

The vector components of a vector are represented as the ordered pair of its x and y components.

For example, if a vector has x - component 'a' and y- component 'b', then the ordered pair notation for the vector is (a, b), where the vector is ai + bj,

Now the vector C has its x- component = -2

y- component of C = -1

Therefore, ordered pair notation of C = (-2, -1)

x- component of D = 2

y-component of D = -3

Therefore, ordered pair notation of D = (2,-3)

So the expression -2c + 6d = -2 (-2,-1) +6 (2,-3) = (4,2) + (12, -18)

= (16, -16) in the ordered pair notation.

That is, the vector -2c + 6d is a vector with x-component 16 and y-component -16.

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The equation is e = 62h for the plumber and m = 10h for the runner

An equation is an expression that shows the relationship between two or more numbers and variables.

7) Let e represent the plumber earnings in dollars after h hours of work.

She earns $62 for each hour, therefore:

e = 62h

8) Let m represent the distance in miles run in h hours

The runner averages 10 miles per hour., therefore:

m = 10h

The equation is e = 62h for the plumber and m = 10h for the runner

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To simplify the expression (s⁴t)²(st), we need to apply the exponent rules and perform the necessary calculations.

First, let's simplify the exponent of (s⁴t)². Since we have a power raised to another power, we multiply the exponents: ² × 4 = 8. So, the expression becomes (s⁸t)²(st).

Next, we multiply the terms inside the parentheses. For the first part, (s⁸t)², we apply the exponent ² to both s and t, resulting in s⁸²t². This simplifies to s¹⁶t². Then, we multiply this term with the remaining st, giving us s¹⁶t²st.

Finally, we combine the like terms. Multiplying s and s¹⁶ gives us s¹⁷, and multiplying t² and t gives us t³. Therefore, the simplified expression becomes s¹⁷t³. The simplified form of (s⁴t)²(st) is s¹⁷t³, where s is raised to the power of 17 and t is raised to the power of 3.

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