ell whether the angles are complementary or supplementary. Then find the value of x

Answer:

.............

Step-by-step explanation:

.............

The solution to the given inequality expression is: x ≥ -8 and it is shown on the number line attached

To represent inequalities on a number line we show the range of numbers by drawing a straight line and indicating the end points with either an open circle or a closed circle. An open circle shows it does not include the value. A closed circle shows it does include the value.

We are given the inequality expression as:

8x - 4 ≥ -68

Add 4 to both sides to get:

8x ≥ -64

Divide both sides by 8 to get:

x ≥ -8

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the derivative of y = sec⁻¹(1/x) with respect to x is -1/√(1 - x²). To find the derivative of y = sec⁻¹(1/x), we will use the chain rule of differentiation. Let's start by using the definition of the inverse secant function:

sec⁻¹(θ) = cos⁻¹(1/θ)

Then we can rewrite the given function as:

y = cos⁻¹(x)

Using the chain rule, the derivative of y with respect to x is:

dy/dx = d/dx [cos⁻¹(x)]

= -1/√(1 - x²) * d/dx [x]

= -1/√(1 - x²)

Therefore, the derivative of y = sec⁻¹(1/x) with respect to x is -1/√(1 - x²).

We can check this result by taking the derivative of y using the definition of the inverse secant function:

y = sec⁻¹(1/x)

sec(y) = 1/x

cos(y) = x

-sin(y) dy/dx = 1

dy/dx = -1/sin(y)

Using the Pythagorean identity sin²(y) + cos²(y) = 1, we can solve for sin(y) as:

sin(y) = √(1 - cos²(y)) = √(1 - x²)

Substituting this expression into the derivative, we get:

dy/dx = -1/√(1 - x²)

which is the same result we obtained using the chain rule. Therefore, we have confirmed that the derivative of y = sec⁻¹(1/x) with respect to x is -1/√(1 - x²).

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(a) The standard error of the mean is 129. (b) The probability that the sample mean will be more than $27,175 is 0.50 (c) The probability that the sample mean will be within $1,000 of the population mean is 0.955. (d) The probability that the sample mean will be within $1,000 of the population mean if the sample size were increased to 100 is 0.999.

(a) The standard error of the mean is the square root of the population standard deviation divided by the sample size, which in this case is 7,400/57 = 129.12. The value of the standard error of the mean is therefore 129 (rounded to the nearest whole number).

(b) To find the probability that the sample mean will be more than $27,175, you can use the Z-score formula. The Z-score formula is (sample mean - population mean)/standard error of the mean. Therefore, the Z-score would be (27175-27175)/129 = 0. The probability that the sample mean will be more than $27,175 is 50%, since the probability of any Z-score of 0 is 0.50.

(c) To find the probability that the sample mean will be within $1,000 of the population mean, you can use the Z-score formula again. The Z-score formula is (sample mean - population mean)/standard error of the mean. Therefore, the Z-score would be (27175-27175±1000)/129 = ±7.8. The probability that the sample mean will be within $1,000 of the population mean is 95.5%, since the probability of any Z-score of ±7.8 is 0.955.

(d) To find the probability that the sample mean will be within $1,000 of the population mean if the sample size were increased to 100, you can use the Z-score formula again. The Z-score formula is (sample mean - population mean)/standard error of the mean. Therefore, the Z-score would be (27175-27175±1000)/74 = ±13.5. The probability that the sample mean will be within $1,000 of the population mean is 99.9%, since the probability of any Z-score of ±13.5 is 0.999.

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Answer:

Step-by-step explanation:

The function f(x) = 15x² is increasing over the interval x > 0.

To see why, we can look at the values of f(x) as x increases from left to right. We can see that when x is negative, f(x) is positive and increasing. When x is zero, f(x) reaches its minimum value of zero. And as x becomes positive, f(x) continues to increase without bound. Therefore, we can conclude that f(x) is increasing over the interval x > 0.

The function f(x) is decreasing over the interval x < 0.

To see why, we can again look at the values of f(x) as x increases from left to right. We can see that when x is negative, f(x) is positive and increasing. But as x approaches zero from the left, f(x) begins to decrease, reaching its minimum value of zero at x = 0. And as x becomes positive, f(x) continues to increase without bound. Therefore, we can conclude that f(x) is decreasing over the interval x < 0.

In order to be certain that the probability of at least one occurrence of each of the six faces of the die is greater than 0.99, you would need to toss the die a minimum of[tex]6 x 5 x 4 x 3 x 2 = 720[/tex] times.

For example, if you tossed the die 6 times, the probability of at least one occurrence of each of the six faces is 0.54. This probability increases with each additional toss, reaching 0.99 after 720 tosses.

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The volume of metal that we have in the hollow bar is 180 cubic inches.

For a prism of length L, width W, and height H, the volume is:

V = L*H*W

Here we need to take the volume of the larger prism, and subtract the volume of the hole, then the volume of metal that we have is:

Volume = 5in*6in*10in - 3in*4in*10in

Volume = 300in³ - 120in³

Volume = 180 in³

The bar has 180 cubic inches of metal.

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The data points in this set vary from 0 to 10. The spread of the data set gives us an idea of how much the individual data points differ from each other, and can help us understand the variability and distribution of the data.

The mean is a measure of central tendency that represents the average value of a set of numbers. There are different types of means, including the arithmetic mean , the geometric mean , and the harmonic mean.

The spread of data refers to the variability or dispersion of a set of values. It provides information about how spread out or clustered the data is. A set of data can have a high or low spread, depending on the range of values and how they are distributed.

In the given question,

The spread of a data set refers to how much the individual data points in the set vary from each other. There are several measures of spread that are commonly used, including the range, variance, and standard deviation.

To find the spread of the data set {4, 2, 6, 10, 8, 0}, we can calculate the range, which is the difference between the maximum and minimum values in the set. The maximum value in the set is 10, and the minimum value is 0, so the range is:

Range = maximum value - minimum value = 10 - 0 = 10

Therefore, the spread of the data set is 10.

In other words, the data points in this set vary from 0 to 10. The spread of the data set gives us an idea of how much the individual data points differ from each other, and can help us understand the variability and distribution of the data.

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Answer:

Its 6

Step-by-step explanation:

Did the test

Answer:

1) car speed = 1.05km/minute

2) 5.25 km in 5 minutes

Step-by-step explanation:

1) [tex]\frac{63km}{60minutes}=1.05km/minute\\[/tex]

2) 1.05 km × 5 minutes = 5.25 km

Answer:

Step-by-step explanation:

process =63/60=1.05m/min

The answer is , (a)  the length of AD is approximately 7.62 meters. (b) the size of angle DCB is approximately 59.04° degrees. 3. the angle of depression of the pedestrian from the man is approximately 38° degrees.

The Pythagorean theorem is a fundamental concept in mathematics that states that in a right triangle (a triangle with one angle measuring 90 degrees), the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.

2. (a) To calculate the length of AD, we can use the Pythagorean theorem,

In triangle ABD, we have:

AB² + BD² = AD²

Substituting the given values, we get:

7² + 3² = AD²

49 + 9 = AD²

58 = AD²

Taking the square root of both sides, we get:

AD ≈ 7.62 m

Therefore, the length of AD is approximately 7.62 meters.

(b) To calculate the size of angle DCB, we can use the trigonometric function tangent, which is defined as the ratio of the length of the opposite side to the length of the adjacent side in a right triangle.

In triangle DBC, we have:

tan(DCB) = opposite/adjacent = BC/BD = 5/3

Using a calculator, we can find the inverse tangent of 5/3, which gives us:

DCB ≈ 59.04°

Therefore, the size of angle DCB is approximately 59.04° degrees.

3. Let's call the height of the building "h" and the angle of depression "θ".

From the man's point of view, we can draw a right triangle with the hypotenuse being the line of sight from the man to the pedestrian, and the opposite side being the height of the building "h". The adjacent side is the distance from the man to the pedestrian, which is 48 meters.

Similarly, we can draw another right triangle from the pedestrian's point of view, with the hypotenuse being the line of sight from the pedestrian to the top of the building, and the opposite side being the distance from the pedestrian to the foot of the building, which is 34.5 meters.

Now, we can use trigonometry to solve for the angle of depression "θ". We have:

tan(θ) = opposite/adjacent = h/48

tan(θ) = adjacent/opposite = 34.5/h

Solving for "h" in the second equation, we get:

h = 34.5/tan(θ)

Substituting this value of "h" in the first equation, we get:

tan(θ) = h/48 = 34.5/(48*tan(θ))

Simplifying this equation, we get:

tan²(θ) = 34.5/48

Taking the square root of both sides, we get:

tan(θ) = √(34.5/48) = 0.7975

Now, we can find the angle of depression "θ" by taking the inverse tangent (arctan) of this value:

θ = arctan(0.7975) = 38.3 degrees (rounded to the nearest degree)

Therefore, the angle of depression of the pedestrian from the man is approximately 38 degrees.

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Step-by-step explanation:

1) area= 2.4^2×3.14=18.0864

rounded=18ft^2

circumference= 4.8×3.14=15.072

rounded= 15ft

2) area= 6^2×3.14=113.04

rounded= 110ft^2

circumference= 12×3.14=37.68

rounded= 38ft

3) area= 32^2×3.14=3215.36

rounded=3220ft^2

circumference= 64×3.14=200.96

rounded=200ft

The new number that was added to the set is 74 by using mean formula for some numbers.

Let's begin by determining the mean of a set of numbers using the following formula:

average = (sum of numbers) / (number of numbers)

We can write: since we know that the mean of 21 numbers is 30.

/ 21 = 30 = (sum of 21 numbers)

Multiply LHS and RHS by woth 10:

sum of 21 digits equals 630

The new mean will now be determined by adding a new number to the set. Let's call the new number x since we don't yet know its value. We can write: 32 = (sum of 21 numbers + x) / 22 since we also know the new mean is 32.

The result of adding the two sides together is: total of the 21 numbers plus x = 704

We may change the equation to read 630 + x = 704 as we already know the sum of the original 21 values is 630.

630 is subtracted from both sides, giving us:

x = 74

74 is the new number that was so added to the collection.

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Answer: Yes

Step-by-step explanation:

To determine if Mindy's estimate is reasonable, we need to consider the context of the movie theater and the audience it serves. Generally, movie theaters offer tickets to various categories of customers, such as adults, children, and seniors. Seniors usually receive discounted tickets to encourage their attendance.

Mindy estimates that out of 400 tickets sold on a Friday evening, about 100 of them will be senior tickets. This means that she is estimating that 25% of the tickets sold are senior tickets (100 senior tickets / 400 total tickets = 0.25 or 25%).

While it's difficult to know the exact proportions of ticket categories sold without more information, a 25% estimate for senior tickets may be reasonable if the movie theater attracts a diverse audience and offers films or events that appeal to seniors. The actual proportion of senior tickets might vary depending on the location of the theater, the movies being shown, and the demographics of the surrounding community.

It would be helpful to gather more data on the actual distribution of ticket sales across different categories or to compare Mindy's estimate with industry averages to determine if her estimate is reasonable.

Answer:

Whichever equation has a slope of 5/7.

Step-by-step explanation:

Parallel lines will always share the same slope. The slope is found by denoting where the variable m is at. It is noteworthy of the placement of m in the given slope equation:

y = mx + b

Therefore, whichever choice(s) have 5/7 as a slope would be your answer.

~

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Cos G therefore equals 4/5 since we must use mathematics to express cos G as a fraction in the simplest words.

A closed, two-dimensional triangle in geometry is a shape having three straight sides and three angles. Triangles can be categorized according to the size of their angles and the length of their sides. In three locations known as vertices, a triangle's three sides come together. An angle is the place where two triangle sides intersect, and the angle that faces a given side is known as the opposing angle. A triangle's three angles can never add up to more than 180 degrees.

given

We may use the cosine rule to find cos G:

(E2 + F2 - G2) / cos G (2EF)

Inputting the values provided yields:

[tex]cos G = (20^2 + 25^2 - 15^2) / (2 * 20 * 25)[/tex]

= (400 + 625 - 225) / 1000 = 800 / 1000 \s= 4 / 5

Cos G therefore equals 4/5 since we must use mathematics to express cos G as a fraction in the simplest words.

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Answer:

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

Each triangle face has height of 7 ft and base of 0.6 ft and the base of the pyramid is the square with side of 0.6 ft.

Total surface area includes a square base and four triangular faces and the measure of it is:

The matching choice is B.

Using division, we can find that he must sell 2123 pairs to get a profit of $69840.

One of the four fundamental operations in mathematics is division, along with addition, subtraction, and multiplication. The splitting of a large group into smaller groups so that each group contains an equal number of items is a straightforward definition of division. It is a mathematical process used for equitable grouping and distribution.

Here,

Profit by selling one pair of shoes = $80.

Now, expenses = $100,000

Total profit he wants = $69,840.

So, total revenue to be generated = 100000 + 69840

= $169840.

Let x be the total pairs sold.

So, x = 169840/80

= 2123.

Therefore, he must sell 2123 pairs to get a profit of $69840.

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Answer:

10 inches

Step-by-step explanation:

If the original figure has a height of 25 inches and it was photocopied at a scale of 40%, we can find the new height of the figure by multiplying the original height by the scale factor:

new height = 25 inches x 0.4

new height = 10 inches

Therefore, the new height of the figure is 10 inches.

Answer:

Wassup

Step-by-step explanation:

By multiplying the initial height by the scale factor, which is 40% or 0.4 in decimal notation, the new height of the image can be calculated.

New height: 25 inches times 0.4 to equal 10 inches.

The figure's revised height is 10 inches as a result.

Step-by-step explanation:

(a) The slope of the equation y = 9x + 15 is 9, and the y-intercept is 15.

(b) The rate of change or slope of the equation y = 9x + 15 is 9, which represents the constant rate at which the workers are picking oranges. For every hour of work, they pick 9 more oranges. The initial amount or y-intercept of 15 represents the number of oranges they would have picked if they had started working from the beginning of time. However, since this is not possible, it can be interpreted as the number of oranges they picked before starting to work for the period of time that is being measured.

The equation for the number of baskets is an illustration of a linear function.

The function is given as:

[tex]\bold{y=9x+15}[/tex]

(a) The slope and the y-intercept

A linear function is represented as:

[tex]\bold{y=mx+b}[/tex]

Where:

m represents the slope, and b represents the y-intercept

By comparison, the slope is 9, and the y-intercept is 15

(b) The rate of change and the initial amount

The rate of change is the slope, and the initial amount is the y-intercept

By comparison, the rate of change is 9, and the is 15

The constant percent rate of change in the exponential function [tex]f(x) = 2(3)^x[/tex] is 200%, indicating a doubling of the output value for each unit increase in the input value.

The equation [tex]f(x) = 2(3)^x[/tex] represents an exponential function. Exponential functions have a constant percent rate of change, which means that the percent change between any two points on the graph of the function is the same.

In this case, we can find the percent rate of change by calculating the ratio of the output values for any two input values that differ by 1. For example, if we compare the output value when x=1 to the output value when x=0, we get:

[tex]f(1) = 2(3)^1 = 6[/tex]

[tex]f(0) = 2(3)^0 = 2[/tex]

The percent change from x=0 to x=1 is:

percent change = (f(1) - f(0)) / f(0) x 100%

= (6 - 2) / 2 x 100%

= 200%

This means that the output value increased by 200% when the input value increased by 1. We can also express this as a constant percent rate of change by dividing the percent change by the change in input value:

constant percent rate of change = percent change / change in input value

= 200% / 1

= 200%

Therefore, the equation [tex]f(x) = 2(3)^x[/tex] has a constant percent rate of change of 200%.

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Answer:    scalene triangle

Step-by-step explanation:

can be defined as a triangle whose all three sides have different lengths, and all three angles are of different measures. The angles of a scalene triangle follow the angle sum property and always add up to 180.

Answer:

scalene triangle is the triangle

Consider concert tickets as a long-term savings objective.Therefore, the answer is A.

Savings refers to anything that existing at any given moment, a stock variable, whereas saving refers to an action occurring over period, a flow variable. Even seasoned economists and financial experts frequently refer to "saving" for "savings" due to the widespread misunderstanding of this distinction.\

Saving for a concert is not a long-term savings goal because it is a short-term financial goal. Long-term savings goals typically involve saving money for events or expenses that will occur several years or even decades in the future, such as college, a down payment on a house, or retirement. Saving for a concert is unlikely to take more than a few months or a year, so it is not a long-term goal.

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The graph of each function from a to d are attached below

Graphs of nonlinear functions are graphs of functions that do not have a constant rate of change or a linear relationship between the input and output values. Nonlinear functions include quadratic, exponential, logarithmic, trigonometric, and many other types of functions.

The shape of the graph of a nonlinear function can vary greatly depending on the specific type of function. For example:

The graph of a quadratic function (y = ax^2 + bx + c) is a parabola, which is a symmetric U-shaped curve.

The graph of an exponential function (y = a^x) is a curve that increases or decreases rapidly, depending on whether the base a is greater than or less than 1.

The graph of a logarithmic function (y = log_a(x)) is a curve that approaches a vertical asymptote as x approaches zero.

The graph of a trigonometric function (y = sin(x) or y = cos(x)) is a periodic wave that oscillates between a maximum and minimum value.

Nonlinear functions can exhibit complex and interesting behaviors, such as multiple intercepts, asymptotes, and singularities. The graphs of these functions can be used to model a wide range of real-world phenomena, such as population growth, radioactive decay, and the motion of objects under the influence of gravity.

The graphs of the functions given are attached below

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Answer:

a. vertical angles

b. supplementary angles

c. complementary angles

The score obtained by Lara is less than the score obtained by Pei, which can be modeled by this inequality 30,065 < 30,408.

In Mathematics, an inequality simply refers to a mathematical relation that is typically used for comparing two (2) or more numerical data and variables in an algebraic equation based on any of the inequality symbols;

Based on the information provided about the scores (points) scored by Lara and Pei after playing the same game;

Lara = thirty thousand sixty five points = 30,065 points.

Pei = thirty thousand four hundred eight points = 30,408 points.

In conclusion, we can logically deduce that 30,408 points is greater than 30,065 points or 30,065 points is less than 30,408 points.

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Answer:

perimeter = 96.8 m

Step-by-step explanation:

the sides of a square are congruent , then perimeter (P) is calculated as

P = 4s ( s is the side length )

the area (A ) of a square is calculated as

A = s²

given A = 585.64 , then

s² = 585.64 ( take square root of both sides )

s = [tex]\sqrt{585.64}[/tex] = 24.2

Then

P = 4 × 24.2 = 96.8 m

Answer:

= 96.8 m

Step-by-step explanation:

Area of a square = side²

Perimter of a square = 4*side

Then:

585.64 = side²

√585,64 = √side²

it is a geometric figure, therefore, only the positive value will be obtained

24.2m = side

Perimeter = 4*side

Perimeter = 4*24.2

The value of x in the given triangle is 36.87°.

One of the six functions in mathematics is the trigonometric function (sine [sin], cosine [cos], tangent [tan], cotangent [cot], secant [sec], and cosecant [csc]) In trigοnοmetry, sin cοs and tan values are the primary functiοns we cοnsider while sοlving trigοnοmetric prοblems. These trigοnοmetry values are used tο measure the angles and sides οf a right-angle triangle. Apart frοm sine, cοsine and tangent values, the οther three majοr values are cοtangent, secant and cοsecant.

According to Trigonometric function,

Tan θ = Opposite side/Adjacent side

Therefore,

Tan θ = 6/8

θ = arctan(6/8)

θ ≈ 36.87°

This is simplest way to calculate, there is no other way to calculate.

Thus, the value of x in the given triangle is 36.87°.

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