Explain how you can tell if the expressions 7x – 4 and 6x – 4 – x are equivalent. Sample Response: 6x − x = 5x. The new expression is now 5x − 4. This is not equivalent to 7x − 4. Check all that you included in your response. Show the answer for 6x – 4 – x. Combine like terms. Find that the expressions are not equivalent.

Answer:

Blue dot: (0,10)

red dot: (1,-9) or (2,-8)

Step-by-step explanation:

The equation is y=x-10

The difference in total principal and interest payment between the 20-year loan versus the 15-year loan is B. $44,061.05.

The difference is obtained by computing the total payments for the Option B loan and comparing these to the total payments for Option A loan.

The total payments for Option B can be computed using an online finance calculator that determines also the monthly payments.

Mortgage loan = $167,800

Interest rate = 7.45%

Mortgage period = 240 (20 years x 12)

Total payment (Future Value) = $323,198.36

Monthly payment = $1,346.66 ($323,198.36/240)

N (# of periods) = 180 months (15 years x 12)

I/Y (Interest per year) = 7.45%

PV (Present Value) = $167,800

FV (Future Value) = $0

Results:

Monthly Payment (PMT) = $1,550.76

Sum of all periodic payments = $279,137.31

Total Interest = $111,337.31

Option A total payment = $323,198.36

Option B total payment = $279,137.31

Difference between the two options = $44,061.05 ($323,198.36 - $279,137.31)

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The angle that the pilot should turn in order to fly directly to the airport is given as follows:

x = 28.2º.

The three trigonometric ratios are defined as follows:

For the angle x, we have that:

Hence the angle is obtained applying the tangent as follows:

tan(x) = 105/196

x = arctan(105/196)

x = 28.2º.

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The area of the square according to the dimensions of base and height is 16 m².

The square is a shape with equal sides. Thus, the base and height of this shape is always equal. Now when we have the measurements of its side, we can calculate the area of the square. The formula for the same is -

Area = side²

Keep the value in formula to find the value of are of square

Area of square = 4²

Taking square on Right Hand Side of the equation

Area of square = 16 m²

Thus, the area of square is 16 m².

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The volume of the triangular prism is 144 cm³.

What is the volume of the triangular prism?

We know that the volume of the prism = base area × Length of the prism. Therefore, the volume of the prism, in this case, is calculated using the same formula, Volume of triangular prism = (1/2) bh × L.

We have given:

b = 8cm,

h = 3 cm

l = 12 cm

So, the Volume of the triangular prism = (1/2) bh × L.

= (1/2) 8*3 × 12.

= 12 * 12

= 144

Hence, the volume of the triangular prism is 144 cm³.

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Word problems

Simultaneous equation

4b + 3n = $23.50 x2

5b + 2n = $21.50 x3

We solve this equation using the elimination method. By removing necklaces, we can find the cost of a bracelet.

8b + 6n = $47 --- eqn 1

15b + 6n = $64.5 --- eqn 2

Subtract eqn 1 from eqn 2

7b = 17.5

1b = 17.5/7

1b = $2.50

Substitute the value of bracelet into eqn 1 to find the cost of 1 necklace

8(2.5) + 6n = $47

20 + 6n = $47

6n = 47 -20

6n = 27

1n = 27/6

1n = $4.5

1b + 1n = ?

2.50 + 4.50 = $7

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According to the concept of unit conversion, 57 feet is equal to 1737.36 centimeters.

Unit conversion is an essential skill to have in science, engineering, and everyday life. It allows us to convert between different units of measurement and compare them easily.

To convert 57 feet to centimeters, we need to know the conversion factor between these two units. One foot is equal to 30.48 centimeters. So, we can multiply the given number of feet by this conversion factor to get the equivalent number of centimeters.

57 feet x 30.48 cm/ft = 1737.36 cm

In unit conversion, it is important to keep track of the units and make sure they cancel out correctly. In this case, the feet unit cancels out with the feet unit in the conversion factor, leaving us with only the centimeter unit.

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Nominal data have no inherent order or ranking, while ordinal data have categories that have a natural order or ranking.

Nominal and ordinal are two sorts of information that are utilized in measurements and information examination. The primary distinction between them is in the idea of the information.

Nominal information are all out information where the qualities address discrete classes or gatherings, however there is no inborn request or positioning among them. Instances of ostensible information incorporate tones, orientation, conjugal status, or sorts of natural product.

Ordinal information, then again, have a characteristic request or positioning to their qualities. They are straight out information, yet the qualities address a particular request or progressive system. Instances of ordinal information incorporate degrees of training, grades, or rankings of sports groups.

To sum up, ostensible information are portrayed by classes that have no intrinsic request or positioning, while ordinal information have classifications that have a characteristic request or positioning.

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We can convert milliseconds to seconds using the formula 1 millisecond = 10⁻³ seconds.

The second is the unit of time. A millisecond is likewise a time unit, however it is a smaller unit.

We already know Milli is equivalent to 10⁻³.

As a consequence, we may use the unit conversion concept to describe the connection.

One millisecond is equivalent to 10⁻³ seconds.

For instance, 6 milliseconds is equal to 6 x 10⁻³ seconds.

As a result, we now have a standard formula for calculating the value of time in milliseconds to seconds and seconds to milliseconds.

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The percent discount for a student ticket is C. 40%

Percent Discount is a kind of discount that is offered on a product or service in the form of an amount per hundred.

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

Original price of the ticket = $50

Price of ticket on Monday = $35

Additional discount = $5

To determine the percentage discount, we make use of the following equation

Discount = 1 - (Price of ticket on Monday - Additional discount)/Original price of the ticket * 100%

Substitute the known values in the above equation, so, we have the following representation

Discount = 1 - (35 - 5)/50 * 100%

Evaluate

Discount = 40%

Hence, the percentage discount is 40%

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No, the probability that a continuous random variable equals a certain value is zero does not imply that the probability of finding even or odd values is also zero.

The reason for this is that even and odd values are not specific points in the continuous probability distribution, but rather sets of points. For example, if we consider a uniform distribution over the interval [0, 1], the probability of any particular point in the interval is zero, including both even and odd values. However, the probability of finding an even value in the interval is 1/2, since half of the values in the interval are even. Similarly, the probability of finding an odd value is also 1/2. Therefore, the fact that the probability of a continuous random variable taking a certain value is zero does not imply anything about the probability of finding even or odd values.

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it will take them both 600 seconds to ice 35 cupcakes.

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Here,  Ann can ice a cupcake in 30 seconds,

Then, the total number of cupcakes iced by Ann is,

t/30 cupcakes

Similarly, If Sarah can ice a cupcake in 40 seconds,

Then, the total number of cupcakes iced by Sarah is

t/40 cupcakes,

Hence, For them to ice 35 cupcakes together, then;

t/30 +  t/40 = 35

where t is the times taken by both of them to ice 35cupcakes

40t+30t/1200 = 35

70t/1200 = 35

7t/120 = 35

t/120 = 5

t = 600

Thus, This shows that it will take them both 600seconds to ice 35 cupcakes.

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Answer:

Step-by-step explanation:

You want the graphical solution to the set of inequalities that describes the numbers of games (x) and songs (y) that Staci can buy with $20, if a game costs $2 and a song costs $1, and Staci wants to buy at least 12 items.

The inequalities that describe the numbers are ...

  2x +y ≤ 20 . . . . . Staci has at most $20 to spend

  x + y ≥ 12 . . . . . . Staci wants to buy at least 12 items

Each of these inequalities has a solid boundary line on its solution space graph. The shading is below the line for the first inequality, and above the line for the second one. The vertices of the triangular solution space are ...

  (0, 12), (0, 20), (8, 4)

Possible numbers are the coordinates of any grid point within the triangle or on its boundaries.

Answer:

Below

Step-by-step explanation:

Look for the letter that is between 1 and 2 ...very close to 2

=  1.85    <===== very close to '2'

Answer:

Step-by-step explanation:

Starting with the left-hand side (LHS) of the identity:

(cos x)(tan x + sin x cot x)

We can simplify using trigonometric identities. First, we can rewrite tan x as sin x/cos x and cot x as cos x/sin x:

(cos x)(sin x/cos x + sin x(cos x/sin x))

Simplifying, we get:

(sin x + cos2 x)/sin x

Next, we can multiply the numerator and denominator by the conjugate of sin x + cos2 x, which is sin x - cos2 x:

[(sin x + cos2 x)/(sin x + cos2 x)] * [(sin x - cos2 x)/(sin x - cos2 x)]

Expanding and simplifying, we get:

[(sin x)(sin x - cos2 x) + (cos2 x)(sin x - cos2 x)] / [(sin x)(sin x - cos2 x) + (cos2 x)(sin x + cos2 x)]

Simplifying further, we get:

(sin2 x - cos2 x + cos2 x sin x - cos4 x) / (sin2 x + cos2 x)

Using the identity sin2 x + cos2 x = 1 and simplifying, we get:

(sin x - cos2 x) / 1

Finally, using the identity cos2 x = 1 - sin2 x, we can simplify to:

(sin x - (1 - sin2 x)) / 1

Simplifying further, we get:

2 sin x - 1

So the left-hand side is equal to 2 sin x - 1.

Now, let's simplify the right-hand side (RHS) of the identity:

sin x + cos2 x

Using the identity cos2 x = 1 - sin2 x, we can rewrite the RHS as:

sin x + 1 - sin2 x

Simplifying further, we get:

1 - sin2 x + sin x

Finally, using the identity sin2 x + cos2 x = 1, we can rewrite as:

cos2 x + sin x

So the right-hand side is equal to cos2 x + sin x.

Since the left-hand side is equal to 2 sin x - 1 and the right-hand side is equal to cos2 x + sin x, the identity is not true in general. Therefore, the given identity does not hold true.

hope this helps

To find out how many oranges Cindy needs to make 7 cups of orange juice, we can use ratios and proportions.

First, let's find out how many oranges she needs to make 1 cup of orange juice:

2 1/2 oranges make 1/2 cup of orange juice

To make 1 cup of orange juice, she needs twice as many oranges: 2 1/2 * 2 = 5 oranges

So, Cindy needs 5 oranges to make 1 cup of orange juice.

Next, let's use this information to find out how many oranges she needs to make 7 cups of orange juice:

1 cup of orange juice requires 5 oranges

To make 7 cups of orange juice, she needs 7 times as many oranges: 5 * 7 = 35 oranges

Therefore, Cindy needs 35 oranges to make 7 cups of orange juice.

If Cindy used 2 1/2 oranges to make 1/2 cup of orange juice, Cindy will need 35 oranges to make 7 cups of orange juice.

To find out how many oranges Cindy will need to make 7 cups of orange juice, we can set up a proportion based on the information given.

First, we need to determine the ratio of oranges to orange juice. According to the given information, Cindy used 2 1/2 oranges to make 1/2 cup of orange juice. We can represent this as 2.5 oranges per 0.5 cups of juice.

To find the number of oranges needed for 7 cups of juice, we can set up a proportion:

2.5 oranges / 0.5 cups = x oranges / 7 cups

Now we can cross-multiply and solve for x:

(2.5 oranges) * (7 cups) = (0.5 cups) * (x oranges)

17.5 oranges = 0.5x

Divide both sides by 0.5:

17.5 / 0.5 = x

x = 35

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Therefore, the area of the quarter circle of radius 8 cm is 16π square centimeters (or approximately 50.2655 square centimeters if we use a decimal approximation for π).

A circle is a two-dimensional shape that is defined as the set of all points that are a fixed distance (called the radius) from a central point (called the center) in a plane. It is one of the most basic geometric shapes and is often used in a variety of mathematical and scientific contexts. One important thing to note about circles is that they are symmetrical: any line passing through the center of a circle divides the circle into two halves that are mirror images of each other. Circles are commonly used in a variety of contexts, including geometry, trigonometry, physics, engineering, and many other fields. They are also used in everyday life, such as in the design of wheels and other circular objects, the calculation of the areas of circular fields or gardens, and the measurement of circular objects like plates and bowls.

Here,

The formula for the area of a quarter circle is given by:

A = (1/4)πr²

where A is the area of the quarter circle, r is the radius of the circle, and π is the mathematical constant pi (approximately 3.14159).

In this case, the radius of the quarter circle is 8 cm, so we can substitute this value into the formula and simplify as follows:

A = (1/4)π(8 cm)²

A = (1/4)π(64 cm²)

A = 16π cm²

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Answer:-1

Step-by-step explanation:

When you multiply exponents that have the same bases you add the exponent. You subtract the exponents when you divide.

x^9=x^y*x^10  the blank box is -1.

The missing information in the table is $290,000 for Firm 1 and $18,562,433 for Firm 2

The premium of a bond can be calculated by taking the coupon rate and subtracting the yield, and then multiplying the result by the face value of the bond.

For Firm 1, the premium is given by (7.00% - 8.00%) × $300,000 = -$10,000.

The proceeds of Firm 1 can then be calculated by

=> $300,000 – $10,000 = $290,000.

For Firm 2, the yield and coupon rate that is as interest are both given as 3.00%. This means that the bond will be sold at par value, so the face value and proceeds of the bond will be the same.

The face value of Firm 2 can be calculated by taking the proceeds given and dividing by the bond’s yield.

Thus, Firm 2’s face value is given by $556,853 / 3.00% = $18,562,433.

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Complete Question:

Complete the missing information in the table below. Assume that all bonds pay interest semiannually.

Do not use negative signs with answers.

Round percentages to one decimal place (ex. 0.0345 = 3.5%).

Round all other values to the nearest whole number.

Annual Years to Coupon  Issue

Yield Maturity Rate Face value Proceeds

Firm 1 8.00% 15 7.00% $300,000 $_______

Firm 2 3.00% 10 0.00% $_______ $556,853

The value where the histogram balances when supported at that point is called the mode of the distribution.

The mode of distribution is the value that appears most frequently in the data set. It is often used as a measure of central tendency, along with the mean and median. The mode is especially useful when dealing with categorical or discrete data, where the possible values are limited and well-defined.

For example, the mode of a list of test scores might be the score that occurs most frequently, indicating the most common level of performance. In a histogram, the mode is the value where the distribution is highest, or where the histogram balances when supported at that point.

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A statistical technique that would allow a researcher to cluster such traits as being talkative, social, and adventurous with extroversion is called factor analysis.

Statistical techniques are methods and procedures used in the collection, analysis, interpretation, and presentation of data. These techniques involve the use of mathematical and statistical models to draw meaningful insights and conclusions from data.

Some common statistical techniques include:

Descriptive statistics: These techniques are used to summarize and describe the key features of a dataset, such as central tendency, variability, and distribution.

Inferential statistics: These techniques are used to make inferences about a larger population based on a sample of data. This involves using probability theory to estimate population parameters and test hypotheses.

Regression analysis: This technique is used to model the relationship between one or more independent variables and a dependent variable.

Hypothesis testing: This technique is used to test the validity of a hypothesis or claim about a population using sample data.

Time series analysis: This technique is used to analyze data that varies over time, such as stock prices or weather patterns.

Cluster analysis: This technique is used to group similar observations together based on their characteristics.

Data mining: This technique involves the use of automated methods to discover patterns and relationships in large datasets.

Statistical techniques are widely used in many fields, including business, economics, social sciences, medicine, and engineering. They are used to make informed decisions, identify trends and patterns, and to understand complex systems.

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a) The point that is on both lines is given as follows: (4, 60).

b) They will have read the same number of pages on the 4th day, when they will have read 60 pages.

We want to obtain the graphic solution for the system of equations, hence we obtain the point of intersection of the two equations.

The equations for this problem are given as follows:

Then the ordered pair representing the solution is given as follows:

(5,60).

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The chi-square goodness-of-fit test can provide important information about whether the observed data significantly deviates from the expected distribution, which categories or bins contribute to the deviation, and the overall goodness-of-fit of the data to the expected distribution.

The chi-square goodness-of-fit test is a statistical test used to determine if a sample of data comes from a population with a specific distribution. Specifically, the test compares the observed frequencies of data in different categories or bins with the expected frequencies of data in those categories based on a hypothesized distribution.

It can determine whether the observed data significantly deviates from the expected distribution. If the test results in a p-value less than the chosen level of significance, it indicates that the observed data significantly deviates from the expected distribution, and the null hypothesis (that the data follows the expected distribution) can be rejected.

It can identify which categories or bins contribute the most to any significant deviation. The test statistic and associated p-value can help to identify which categories or bins show significant differences between the observed and expected frequencies.

It can provide information on the overall goodness-of-fit of the data to the expected distribution. The test statistic provides a measure of the overall goodness-of-fit, with higher values indicating greater deviation from the expected distribution.

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This output shows the counts of each character in the string "hello world". The letter 'l' appears 3 times, the letter 'o' appears 2 times, and so on.

Here's an example Python function called count_characters that counts the number of times each character appears in a user-supplied string s:

def count_characters(s):

Given a string s, returns a dictionary containing the count of each character in the string.

char_count = {}

for char in s:

if char in char_count:

char_count[char] += 1

else

char_count[char] = 1

return char_count

This function creates an empty dictionary called char_count to store the counts of each character. It then loops through each character in the string s and checks if it's already in the char_count dictionary. If it is, it increments the count for that character. If it's not, it adds the character to the dictionary with a count of 1. Finally, the function returns the char_count dictionary.

You can call this function like this:

string = "hello world"

char_count = count_characters(string)

print(char_count)

Output:

python

{'h': 1, 'e': 1, 'l': 3, 'o': 2, ' ': 1, 'w': 1, 'r': 1, 'd': 1}

This output shows the counts of each character in the string "hello world". The letter 'l' appears 3 times, the letter 'o' appears 2 times, and so on.

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The relationship between quart to ml is that 1 quart is equal to 946.6 mililitres.

Quart and ml both are the unit of volume. ml is abbreviated form of mililitres and the two units are related together. Here is how they are related -

1 quart is equal to 946.6 mililitres.

Thus, in this method we can simply relate and calculate the quart amount of liquid in mililitres. Let us interpret the above mentioned statement through example. For instance, we need to know the mililitres in 0.25 quart. Here is how we will solve this.

Quantity in mililitres = quantity in quart × amount of mililitres in one quart

Quantity of mentioned liquid in mililitres = 0.25 × 946.4

Performing multiplication on Right Hand Side of the equation

Quantity of mentioned liquid in mililitres = 236.6 mililitres

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The exponential equation can be written as y = 84.3(1.02)ˣ.

Exponential equations are equations where the independent variable, x is in the exponent.

Given that,

Sale in the first week after opening her shop = $86

After advertising her new shop on social media, her sales increased by 20% the following week and continued to increase at that rate.

Percentage increase each week = 20%

Exponential equation will be of the form,

y = a (b)ˣ

where a is the initial sale.

b is the increase in sale.

Initial sale = $86

Sale in the second week = $86 + (20% of $86)

                                         = 86 + (0.2 × 86)

                                         = 86 (1 + 0.2)

Sale in the third week = [86 (1 + 0.2)] + [0.2 × 86 (1 + 0.2)]

                                     = [86 (1 + 0.2)] [ 1 + 0.2]

                                     = 86 (1 + 0.2)²

This goes on.

So sale after x weeks = 86 (1 +0.2)ˣ⁻¹

                                    = 86 (1.02)ˣ⁻¹

                                    = 86 (1.02)ˣ (1.02)⁻¹

                                    = 84.3(1.02)ˣ

Hence the function can be modeled as 84.3(1.02)ˣ.

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Your question is incomplete. The complete question is given below.

Isabella recently opened her online candle shop, Spectacular Scents. Her sales in the first week were $86. After advertising her new shop on social media, her sales increased by 20% the following week and continued to increase at that rate.

Write an exponential equation in the form y = a (b)ˣ that can model Isabella's weekly sales, y , x weeks after opening her shop.

Answer: 3:20

Step-by-step explanation:

Answer:  She will be finished by 3:20.

Step-by-step explanation: The time at which she started = 1:40

Adding 1 hour 40 minutes to the given time = 1:40 + 1:00 = 2:40

Adding 20 minutes to it, time becomes = 3:00

Adding 20 more minutes (20+20 =40), final time = 3:20.

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Binomial probability distribution of the given experiment is as follows 0.00902, 0.07056, 0.22073, 0.34524, 0.26999, 0.08446. its mean is 3.05 and standard deviation is 0.53196.

The binomial distribution is a type of probability distribution that models the probability of one of two outcomes given a set of parameters. It summarizes the number of trials with the same chance of producing the same result. The value of a binomial is determined by multiplying the number of independent trials by the number of successes.

Given : n = 5

            P = satisfied Americans = 61/100

            Q = 1 – P = 1 – 61/100 = 39/100

Binomial distribution formula   P(x) = ⁿCₓ . Pˣ . Qⁿ⁻ˣ

                                                ⁿCₓ = n!/ x! (n-x)!

a) Binomial table

P(x) = P(0) = ⁵C₀ . (61/100)⁰. (39/100)⁵ = 0.00902

P(x) = P(1) = ⁵C₁ . (61/100)¹ . (39/100)⁴  = 0.07056

P(x) =P(2) = ⁵C₂  . (61/100)² . (39/100)³ = 0.22073

P(x) = P(3) = ⁵C₃ . (61/100)³ . (39/100)² = 0.34524

P(x) = P(4) = ⁵C₄ . (61/100)⁴ . (39/100)¹ = 0.26999

P(x) = P(5) = ⁵C₅ . (61/100)⁵ . (39/100)⁰ = 0.08446

b) mean of binomial distribution = np

                                                     = 5 * 61/100

                                                     = 5 * 0.61

                                                     = 3.05

c) Standard deviation of binomial distribution = √nPQ

                                                                           =√5 * 0.61 * 0.39

                                                                            =  0.53196

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Not necessarily. It is true that if a function F is differentiable at a point A, then F must be continuous at A. This is one of the basic properties of differentiable functions.

However, the converse is not necessarily true. A function can be continuous at a point A without being differentiable at A. In fact, there are many examples of such functions, such as the absolute value function f(x) = |x| at x = 0, which is continuous but not differentiable at x = 0.

To see why a function can be continuous at a point A without being differentiable at A, let's consider the definition of continuity and differentiability.

A function F is continuous at a point A if and only if:

F(A) is defined.

The limit of F(x) as x approaches A exists.

The limit of F(x) as x approaches A is equal to F(A).

Therefore, we can conclude that if a function F is continuous at a point A, we cannot infer that F is differentiable at A.

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Is it true if F is continuous at A then F is differentiable at A?