pleassee if you help i will mark you BRAINLIST

A store pays $85 for a table. The markup is 90%. What is the selling price?

What is the total bill for a $54 dinner with a 5% sales tax and a 20% tip?

The solution set for the number line of inequality can be represented as,

{x | x ≤ 4. 5}

The number line is the way of representation of number and digits in a arranged form to understand the data batter.

The meaning of circle in number line,

The number line going from negative 5 to positive 5 and a solid circle appears between positive 4 and positive 5. The middle point of 4 and 5 is 4.5.

The solid or closed circle means that the value has less than or equal to 4.5. Thus, the solution set for the number line of inequality can be represented as,

{x | x ≤ 4. 5}

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Answer:

(0.88)is not similar to (0.33)

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

To evaluate \(8^{\frac{2}{3} }\) first find the square of 8 and then take the cube root.

The way of representing huge numbers in terms of powers is known as an exponent. Exponent, then, is the number of times a number has been multiplied by itself.

Depending on the powers they possess, many rules of exponents are given.

Law of Multiplication: Exponents should be added while keeping the base constant when multiplying like bases.

Exponents should be multiplied while bases are kept constant when bases are raised by a power of two or more.

Division Rule: When dividing like bases, maintain the base constant and deduct the exponent of the denominator from the exponent of the numerator.

The given value can be written as:

\(8^{\frac{2}{3} } = \sqrt[3]{8^{2} }\)

Hence, to evaluate \(8^{\frac{2}{3} }\) first find the square of 8 and then take the cube root.

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Answer:

x = 35

y = 7

Step-by-step explanation:

See how the image looks like two overlapping triangles. It is given that the triangles are congruent. Its easier to see whats what if you draw the triangles separately. I also flipped over the triangle on the right so they match. Record the given angle measures. Since A is 45° then D is also 45°. DBC is 30°, so we can find the missing angle in triangle DBC. Angles in a triangle add up to 180° so

C + 45 + 30 = 180

C + 75 = 180

C = 105°

This is angle DCB.

Now all the angles are marked. We can set up equations to find x and y. see image.

The crank angle value when the piston is at Top Dead Center (TDC) is 0 radians or 0 degrees. The maximum ratio of the crank radius to the connected length is 0.3.

The crank angle value refers to the angle between the crankshaft and a reference point when measuring the position of the piston. When the piston is at Top Dead Center (TDC), it is at its highest point in the cylinder. The crankshaft is positioned such that the connecting rod is aligned with the crank radius and the piston is at the topmost position. This corresponds to a crank angle value of 0 radians or 0 degrees.

Regarding the maximum ratio of the crank radius to the connected length, this value is given as 0.3. The crank radius is the distance from the center of the crankshaft to the center of the crank pin, and the connected length is the distance from the center of the crank pin to the center of the piston pin. The maximum ratio of 0.3 indicates that the crank radius is 0.3 times the connected length.

It's important to note that these values are specific to the context of the problem statement provided. Different engines or mechanisms may have different values for the crank angle at TDC and the maximum ratio of crank radius to connected length.

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We would not be safe constructing the interval based on an SRS of size 24 from the population if the sample data exhibits a strong departure from normality.

Constructing a one-sample t interval assumes that the population distribution is approximately normal. However, if the sample data shows a significant departure from normality, it would be unsafe to rely on the t interval. In such cases, alternative approaches or non-parametric methods may be more appropriate for estimating the population mean.

When the sample size is large, the Central Limit Theorem allows for a certain degree of departure from normality. However, with a small sample size of 24, if the data is heavily skewed, exhibits strong outliers, or deviates significantly from a normal distribution, the assumptions underlying the t interval may not hold. In these situations, using the t interval would not provide reliable or valid inferences about the population mean.

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Answer:

hi need somebody to talk to pls

Step-by-step explanation:┗( T﹏T )┛〒▽〒

0.529 is the probability that a student does not have a college degree.

From the information given, we know that:

The formula for conditional probability:

P(A|B) = P(A and B) / P(B)

Let A be the event of not having a college degree, and B be the event of being married. We want to find P(A).

Using these values, we can calculate:

P(college degree and B) = (1/2) * (400/850) = 0.235

P(A and B) = 310/850 - 0.235 = 0.07

Finally, we can calculate P(A) using the formula for total probability:

P(A) = 1 - P(college degree)

= 1 - (400/850)

= 0.529

Therefore, the probability that a student does not have a college degree is 0.529.

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good luck buddy rip if you dont get the question

The instructor can conclude that the class performed around the average and that the distribution of grades is likely to be symmetrical. This can also imply that there is no skewness or bias in the data. Answer more than 100 words:When an instructor notes that the mean, median, and mode are all exactly 76.00, it can be inferred that the distribution of grades in the class is roughly symmetrical. This indicates that there are nearly equal numbers of students above and below the average grade.

The mean, median, and mode are three measures of central tendency that are used to summarize the distribution of a dataset. The mean is calculated by adding all the values in the dataset and dividing by the number of observations, while the median is the middle value when the dataset is ordered from smallest to largest. The mode is the value that occurs most frequently in the dataset. When all three measures of central tendency are equal, as in this case, it means that the dataset is roughly symmetrical and there is no skewness or bias. This can also indicate that the dataset is normally distributed, which means that it follows a bell-shaped curve.The instructor can conclude that the class performed around the average, as the mean, median, and mode are all 76.00.

However, it is important to note that this does not give any information about the spread of the dataset. In other words, the instructor cannot tell from this information alone whether the grades were tightly clustered around the average or widely dispersed. For this reason, it may be useful to calculate additional measures of spread, such as the range or standard deviation, to get a better understanding of the distribution.

The instructor can conclude that the class performed around the average and that the distribution of grades is likely to be symmetrical, with no skewness or bias. However, it is important to remember that this information alone does not provide any insight into the spread of the dataset. Additional measures of spread would need to be calculated to determine the degree of variability in the grades.

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The various types of classifiers include:

Decision Tree Classifier: Builds a tree-like model of decisions based on features.

Random Forest Classifier: Ensemble of decision trees that make predictions collectively.

Support Vector Machines (SVM): Creates a hyperplane to separate data into different classes.

Naive Bayes Classifier: Uses Bayes' theorem to calculate the probability of an instance belonging to a particular class.

K-Nearest Neighbors (KNN) Classifier: Assigns a class to an instance based on its neighbors.

Neural Network Classifier: Uses artificial neural networks to classify data.

Logistic Regression Classifier: Models the relationship between input variables and the probability of a binary outcome.

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Answer:

a^2 + b^2 = c^2

Step-by-step explanation:

The distance from Abbotsford to Kelso is 17 km. That is your "a" value. The distance from Abbotsford to Hawick is 15 km.

Answer:Town B  is 26 miles from town A at a bearing of S15 W. Town C  is 54 miles from town A at a bearing of S7 E . Compute the distance from town B to town C Round your final answer to the nearest mile.

Step-by-step explanation:

The present value of the annuity at the end of year 7 is approximately $47,069.08.

To calculate the present value of an ordinary annuity, we can use the formula:

PV = PMT * [(1 - (1 + r)⁻ⁿ) / r],

where PV is the present value, PMT is the annual payment, r is the interest rate per period, and n is the number of periods.

In this case, the annual payment is $4,500, the interest rate is 8%, and the number of periods is 16. However, the payments start at the end of year 8 and continue until the end of year 23, which means there is a delay of 7 years.

Using the formula, the present value at the end of year 7 can be calculated as:

PV = $4,500 * [(1 - (1 + 0.08)⁻¹⁶) / 0.08] = $47,069.08.

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The statement ''the symbol μ ˆ p represents the proportion of a sample of size n, not the proportion of a sample of size n.'' is false because the symbol "μ ˆ p" does not represent the proportion of a sample of size n.

In statistical notation, the symbol "μ ˆ p" typically represents the sample proportion, which is an estimate of the population proportion. The sample proportion is obtained by dividing the number of occurrences of a specific event in the sample by the sample size.

On the other hand, the population proportion, denoted by "p," represents the proportion of the entire population that exhibits a certain characteristic or has a specific attribute.

The symbol "μ ˆ p" could be a typographical error or a confusion between different symbols used in statistics. The correct symbol to represent the sample proportion is usually denoted as "p ˆ" or "p-hat." The symbol "μ" typically represents the population mean.

Therefore, it is incorrect to state that "μ ˆ p" represents the proportion of a sample of size n.

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The volume of a stack of 9 books is 1368.75 cubic inches.

To find the volume of a stack of 9 books, we first need to find the height of the stack. Since each book is 3/4 inch thick, the height of the stack is 9 times 3/4 inch, which is 6 3/4 inches.

Now we need to find the area of the base of the rectangular prism formed by the stack of books. Since each book has an area of 22 1/2 square inches, the total area of the base of the stack is 9 times 22 1/2 square inches, which is 202 1/2 square inches.

Therefore, the volume of the stack of 9 books is:

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False - should be 7 root 5

Step-by-step explanation:

y = hypotenuse, longest side (so, it's the value of c)

Using the value of x (21) & y as (14) in the equation a^2 + b^2 = c^2

I get the value of 7 root 3 as shown above, to be 7 root 5 instead.

I know part of the question is cut off, but I'm sure that it's asking you to prove wrong or right if the triangle could be a right-angle triangle (with right measurements) & it's one because the last missing angle is 90 degrees.

(Root means square root)

Hope this helps!

Answer:

(-2, 21) and (2, -11)  let me know if anything didn't make sense

Step-by-step explanation:

Try and put the symbols in, so for x to the third power write x^3  just makes it all much easier.

The turning point is when a graph changes from increasing to decreasing, or the other way around.  What this means is that its slope is changing from positive to negative, or the other way around.  

The derivative allows you to find the slope at any point of a graph.  If you are unfamiliar witht his concept let me know and I can go more into it.  

Since the derrivative tells you the slope, if you find a spot where it equals 0 then you know before that point it was positive or negative, and then after that point it was the opposite.  In other words it changes, so it's exactly what we are looking for.  Also if a derrivative is ever non existant, like in the square root function the numbers under the square root cannot be negative, so any x value that makes them negative doesn't exist, this means you would want to check these point too because they can be turning points as well.

There are certain special cases where a derivative does not coss 0, and if that happens then the original function does not have a turning point.  So keep that in mind.

The derivative is 3x^2 - 12.  So we want to find when this equals 0.   We also know it always exists so only need to worry about the 0s. Hopefully you are familiar with quadratics having two zeroes, if not let me know.

3x^2 - 12 = 0

3x^2 = 12

x^2 = 4

x = 2 and-2

So these are the turning points.  You should double check though and choose an x value below -2, then between -2 and 2, then larger than 2 and make sure the signs swap.

These are the x values of the turning points.  Solve f(x) at these points to find the y values.  so f(-2) = (-2)^3 - 12(-2) + 5 = 21 and f(2) = -11  so now we know the turning points are (-2, 21) and (2, -11)

The coordinates of the turning points of f(x) are (-2, 21) and (2, -11).

An equation containing derivatives of a variable with respect to some other variable quantity is called differential equations. The derivatives might be of any order, some terms might contain product of derivatives and the variable itself, or with derivatives themselves.

The turning point is when a graph changes from increasing to decreasing, or the other way around that means, its slope is changing from positive to negative.

Given that the derivative of f(x) = x³ – 12x + 5 is 3x² - 12.

Since the derrivative tells the slope, if you find a spot where it equals 0 then before that point it was positive or negative, and then after that point it was the opposite.

The derivative is 3x² - 12.

3x² - 12 = 0

3x²  = 12

x²  = 4

Thus, x = 2 and-2

So, these are the turning points.  

Now Solve f(x) at these points to find the y values.  

so f(x) = x³ – 12x + 5

f(-2) = (-2)³ - 12(-2) + 5 = 21

f(2) = -11  

Hence, the coordinates of the turning points of f(x) are (-2, 21) and (2, -11).

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The statement "there exists a function f such that f(x) < 0, f'(x) > 0, and f''(x) < 0 for all x" is True.

1. f(x) < 0: This means the function is always negative.
2. f'(x) > 0: This means the function is always increasing.
3. f''(x) < 0: This means the function is always concave down.

A function that satisfies all these conditions is f(x) = -e^x.

1. For all x, f(x) = -e^x is always negative because e^x is always positive and the negative sign in front makes it negative.
2. The first derivative of f(x) is f'(x) = -e^x, which is always positive because e^x is always positive and the negative sign cancels out.
3. The second derivative of f(x) is f''(x) = e^x, which is always negative because e^x is always positive.

Therefore, the statement is true.

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To find the slope of the tangent line to the polar curve r = 6cosθ at the point (6 / √2 , π/4), we need to convert the polar coordinates to Cartesian coordinates and then differentiate to find the slope.

Given:

r = 6cosθ

Point in polar coordinates: (r, θ) = (6 / √2, π/4)

Converting to Cartesian coordinates:

x = r * cos(θ)

y = r * sin(θ)

Substituting the given values:

x = (6 / √2) * cos(π/4)

y = (6 / √2) * sin(π/4)

Simplifying:

x = 6 / 2 = 3

y = 6 / 2 = 3

So, the Cartesian coordinates of the point are (3, 3).

To find the slope of the tangent line, we need to differentiate the polar equation with respect to θ and then evaluate it at the given point.

Differentiating r = 6cosθ with respect to θ:

dr/dθ = -6sinθ

Now, evaluate dr/dθ at θ = π/4:

dr/dθ = -6sin(π/4) = -6 / √2 = -3√2

The slope of the tangent line is equal to the derivative dr/dθ evaluated at the given point, which is -3√2.

Therefore, the slope of the tangent line to the polar curve r = 6cosθ at the point (6 / √2, π/4) is -3√2.

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The slope of the tangent line to the polar curve r = 6cosθ at the point (6/√2, π/4) can be summarized as follows:

The slope of the tangent line is √2/2.

In the explanation, we can provide the steps to find the slope of the tangent line:

To find the slope of the tangent line to a polar curve, we need to express the curve in polar coordinates. Using the conversion formulas r = √(x^2 + y^2) and θ = arctan(y/x), we can rewrite the given polar curve r = 6cosθ as √(x^2 + y^2) = 6cos(arctan(y/x)).

Simplifying this equation, we get x^2 + y^2 = 6xcos(arctan(y/x)). Substituting the given point (6/√2, π/4) into this equation, we can find the corresponding values of x and y. Plugging these values into the equation, we obtain (6/√2)^2 + y^2 = 6(6/√2)cos(arctan(y/(6/√2))). Simplifying further, we have 18 + y^2 = 18cos(arctan(y/(6/√2))). By solving this equation, we find that y = 3. Finally, to calculate the slope of the tangent line at the point (6/√2, π/4), we take the derivative of the Cartesian equation and substitute the values of x and y. The resulting slope is √2/2, which represents the slope of the tangent line at the given point.

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Answer:

1

Step-by-step explanation:

The total number of seven-character passwords that can be made with the given characters without repeats is 10,200.

This is calculated by finding the number of ways to choose the first character (11 options), then the second character (10 options), and so on until the seventh character (5 options), which gives 11x10x9x8x7x6x5 = 10,200.

If all four numbers have to be used as the first four characters in the password, then the number of possible passwords reduces to 2,400. This is calculated by finding the number of ways to choose the first four characters (4 options for each), then the remaining three characters (10 options for each), which gives 4x4x4x4x10x10x10 = 2,400.

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There are 4,387,810 possible seven-character passwords that can be made without repeats. If the first four characters must be the numbers 1, 2, 3, and 4, there are 6,720 possible passwords.

To calculate the total number of possible seven-character passwords without repeats, we use the formula for permutations: n! / (n-r)!, where n is the total number of characters and r is the number of characters in the password (in this case, 7). Using this formula, we get 10! / (10-7)! = 10 x 9 x 8 x 7 x 6 x 5 x 4 = 4,387,810.

If we must use the numbers 1, 2, 3, and 4 as the first four characters, we have 4! = 24 ways to arrange them. For the remaining three characters, we have 7 choices for each character (since we cannot repeat any of the previous four characters). Therefore, the total number of possible passwords is 24 x 7 x 7 x 7 = 6,720.

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Different possibilities for the given case are, 267540

4 railroads chosen from 15 class I railroads

2 railroads chosen from 8 class II railroads

1 railroad chosen from 7 class III railroads

So total combinations    = ¹⁵C₄ ˣ ⁸C₂ ˣ ⁷C₁

   = (15!)/(4!*11!) x (8!)/(2!6!) x (7!)/(1!6!)

   = 15 x 7 x 13 x 4 x 7 x 7 = 267540

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In the Mediterranean, the Mycenaeans rose to prominence by a mix of military prowess, economic connections, and cultural sway.

Thus, Military Might: The Mycenaeans had a strong military force and were expert warriors. They used sophisticated bronze weapons and chariot warfare as a tactic.

They were able to increase their influence and take control of neighbouring territories thanks to their military might.

Control over Trade Routes: The Mycenaeans had complete control over key trade routes in the Mediterranean, particularly those that extended from the Aegean to the eastern Mediterranean and beyond.

Thus, In the Mediterranean, the Mycenaeans rose to prominence by a mix of military prowess, economic connections, and cultural sway.

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Answer:

B

Step-by-step explanation:

using the midpoint formula with

(x₁ , y₁ ) = (- 2, 6 ) and (x₂, y₂ ) = (5, 14 )

(\(x_{m}\) , \(y_{m}\) ) = ( \(\frac{-2+5}{2}\) , \(\frac{6+14}{2}\) ) = ( \(\frac{3}{2}\) , \(\frac{20}{2}\) ) = (1.5, 10 )

The function y = sin x / (1 + cos x) has a domain of all real numbers except for x = (2n + 1)π. It intersects the x-axis at x = nπ and the y-axis at y = 0. The function is symmetric about the y-axis. There  is a horizontal asymptote at y = -1. It increases on intervals where -π/2 < x < π/2 and decreases on intervals where π/2 < x < 3π/2. There are no local maximum or minimum values. The concavity of the function changes at x = nπ and there are no points of inflection.

A. The domain of the function y = sin x / (1 + cos x) includes all real numbers except for values of x that make the denominator equal to zero. In this case, the denominator is 1 + cos x, which is equal to zero when cos x = -1. Solving for x, we find x = (2n + 1)π, where n is an integer. Therefore, the domain is all real numbers except for x = (2n + 1)π.

B. To find the x-intercepts, we set y = 0 and solve for x. Setting sin x / (1 + cos x) = 0, we have sin x = 0. This equation is satisfied when x = nπ, where n is an integer. Hence, the function intersects the x-axis at x = nπ. The y-intercept is found by substituting x = 0 into the function, which gives y = 0 / (1 + 1) = 0.

C. The function y = sin x / (1 + cos x) is symmetric about the y-axis. This can be observed from the fact that replacing x with -x in the function does not change its value.

D. There are no vertical asymptotes for this function since the denominator is never zero. However, as x approaches positive or negative infinity, the function approaches a horizontal asymptote at y = -1.

E. The function increases on intervals where -π/2 < x < π/2 because the value of sin x is positive and the value of cos x is always greater than or equal to -1. It decreases on intervals where π/2 < x < 3π/2 because the value of sin x is negative while the value of cos x remains greater than or equal to -1.

F. The function y = sin x / (1 + cos x) does not have any local maximum or minimum values since it is always changing and never reaches a maximum or minimum point.

G. The concavity of the function changes at x = nπ, where n is an integer. Specifically, the function changes from concave up to concave down or vice versa at these points. However, there are no points of inflection where the concavity changes from concave up to concave down or vice versa.

H. Based on the information above, we can sketch the curve of the function. The curve will be symmetric about the y-axis, intersecting the x-axis at x = nπ and the y-axis at y = 0. It will approach a horizontal asymptote at y = -1 as x approaches positive or negative infinity. The curve will increase on intervals where -π/2 < x < π/2 and decrease on intervals where π/2 < x < 3π/2. There are no local maximum or minimum points, and the concavity changes at x = nπ, but there

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Answer:

1 2/7

Step-by-step explanation:

Quotient means division

-3/7 ÷-1/3

Copy dot flip

-3/7 * -3/1

9/7

7/7 + 2/7

1 2/7

Answer:

Step-by-step explanation:

I assume your expression is:

6x^3-60x^2+144x.

I'll use that information.

Factor 6x^3−60x^2+144x

6x^3−60x^2+144x

=6x(x−4)(x−6)

Answer: 1/3

Step-by-step explanation: