what is the soulution 8x + 4x = 0

The car will spend 18 minutes to cover 18 km.

Proportions are defined as the concept where two or more ratios are set to be equal to each other.

Suppose we have two ratio p : q and r : s. If both these ratios are proportional, then we can write it as p : q = r : s or p/q = r/s

Given that,

Time taken to travel 105 km = 1 hr 45 min = 60 min + 45 min = 105 minutes

Time taken to travel 18 km = x

Using the concept of proportion,

105 / 105 = 18 / x

Cross multiplying,

105 x = 18 × 105

x = 18

Hence the time taken to travel 18 km is 18 minutes.

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For a 35 number of pages, the price would be equal. & it would cost $82.

An equation is a  mathematical statement that is made up of two expressions connected by an equal sign.  In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.

here, we have,

An online scrapbooking company charges $12 for a basic book and $2 per page.

Meanwhile, a family friend is willing to make a scrapbook for $47 plus $1 per page.

let, the number of page = x, the price would be equal.

so, we get,

12 + 2x = 47+x

i.e. x = 35

Hence, For a 35 number of pages, the price would be equal. & it would cost $82.

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Refer to the images attached (answers are circled). Let me know if you have any questions.

When using the elimination method to solve, what would be a possible first step in the process is to write the equations in standard forms.

The elimination method is a method used in  solving a pair of simultaneous linear equations  by reducing one equation to one that has only a single variable.

This method is called the Gaussian elimination method.

The steps in the Gaussian elimination method are;

Hence, the step is writing the equations in standard forms.

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The first step in solving this equation by using elimination is to multiply

(4x – 2y = -4) *2

(2x + y = 4)*4

8x – 4y = -8

8x + 4y = 16

The triangle JLK is transformed to J''K''L'' by a rotation of 90° anticlockwise and a translation of -2 units

The measure of the amount a figure is rotated about the center of rotation is called the angle of rotation. The angle of rotation is usually measured in degrees. We specify the degree measure and direction of a rotation.

90° clockwise rotation: (x,y) becomes (y,-x)

90° counterclockwise rotation: (x,y) becomes (-y,x)

180° clockwise and counterclockwise rotation: (x, y) becomes (-x,-y)

270° clockwise rotation: (x,y) becomes (-y,x)

270° counterclockwise rotation: (x,y) becomes (y,-x)

Given data ,

Let the triangle be represented as ΔJKL

Now , the coordinates of the triangle JKL is

J ( 2 , -4 ) , K ( 5 , -4 ) and L ( 2 , -2 )

And , the transformed triangle be represented as Δ J''K''L

Now , the coordinates of the triangle J''K''L'' is

J'' ( 2 , 2 ) , K'' ( 2 , 5 ) and L'' ( 0 , 2 )

The triangle JKL is first rotated by an angle of 90° counterclockwise rotation: (x,y) becomes (-y,x) to form J'K'L'

So , substituting the values in the equation , we get

The coordinates of the triangle J'K'L' is

J' ( 4 , 2 ) , K' ( 4 , 5 ) and L' ( 2 , 2 )

Now , when the triangle is translated -2 units to up , we get

So , the coordinates of the triangle J''K''L'' is

J'' ( 2 , 2 ) , K'' ( 2 , 5 ) and L'' ( 0 , 2 )

Hence , the transformed triangle is going through a rotation of 90° counterclockwise and a translation of -2 units

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Answer:

Either

90 degree rotation about point 0 composition translation of 0 units x, negative 2 units y

or

90 degree rotation about point 0 composition translation of negative 2 units x, 0 units y

Step-by-step explanation:

The answer above is correct.

The statement which best describes the function is The function is negative when x < 0, the correct option is B.

All the points (and only those points) which lie on the graph of the function satisfy its equation.

Thus, if a point lies on the graph of a function, then it must also satisfy the function.

Given;

The graph of the function

Now

We can say that the graph is negative when x<0

The function is never negative is false

The function is negative when x > 0 false

The function is negative when x < 0 and when x > 0 false

Therefore, the function will be negative when x<0.

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The positive integer representing possible values for third side length of the triangle as per given measure of two side length are 45.

Two side length of a triangle be 'x' and 'y'

Side length 'x' = 23

Side length 'y' = 53

Third side length be 'n'

Using triangle inequality we have ,

x + y > n

⇒ 23 + 53 > n

⇒ 76 > n ___(1)

And x + n > y

⇒ 23 + n > 53

⇒ n > 53 - 23

⇒ n > 30 ___(2)

We know 'n' is a positive integer .

30 < n < 76

All the positive integer between 30 and 76 are possible values for 'n'.

Possible values are : 75 - 30 = 45

Therefore, there are 45 possible values for the third side of a triangle.

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Answer:

1/4n - 6 < 96

Step-by-step explanation:

Im a tutor but the way it is worded hurts my brain

The multiplication and division of the numbers 2 and 2 will be 4 and 1, respectively.

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

The numbers are given below.

6/3 and 2

2 and 2

Then the multiplication of the numbers 2 and 2 is given as,

⇒ 2 x 2

⇒ 4

Then the division of the numbers 2 and 2 is given as,

⇒ 2 / 2

⇒ 1

The multiplication and division of the numbers 2 and 2 will be 4 and 1, respectively.

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A moving average is used to smooth the option  2) seasonal variation .

Therefore, a moving average which is used to smooth the seasonal variation.

The above question is incomplete , the complete question is:

A moving average can be used to smooth which of the following options?

1) cyclical variation                  2) seasonal variation

3) irregular variation               4) all responses are correct

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Kristin bought 4 fancy shirts and 3 plain shirts.

Let's assume Kristin bought "x" fancy shirts and "y" plain shirts.

We know that:

x + y = 7 (the total number of shirts Kristin bought)

28x + 15y = 131 (the total amount of money she spent)

We can use the first equation to solve for one of the variables in terms of the other.

For example: y = 7 - x

Substituting this into the second equation:

28x + 15(7 - x) = 131

28x + 105 - 15x = 131

13x = -74

x = -5.692307692 (approximately)

Since x must be a positive integer (the number of fancy shirts cannot be negative or a fraction), this solution is not valid.

However, we can see that the equation does have a solution by trying a larger value for x:

x = 1

y = 6

This gives us:

28 * 1 + 15 * 6 = 131

28 + 90 = 131

118 = 131

This solution is not valid either, since the total amount spent cannot be less than the cost of the shirts.

By repeating this process, we can find that the solution is x = 4 and y = 3.

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The correct answer is option b) Bacteria in samples 2 and 3 mutated quickly to adjust to temperature change.

From the given graph it is seen that sample 1 is not showing any growth or decline despite of the temperature change. One cannot ascertain its gene expression. On the other hand, Sample 2 shows a slight change from 4cm² to 7cm² bacteria count and Sample 3 shows a wide change as per temperature change from 8cm² to 12cm². Hence it can be said that samples 2 and 3 mutated to adjust to the temperature compared to sample 1 which showed no changes.

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Complete Question

the graph below shows the growth of three samples of the different bacteria on Petri dishes incubated over 24 hours as the temperature was increased 10 degrees every eight hours: (Graph in the figure attachment) which statement best explains the data trend observed in the bacteria samples?

a) All bacteria samples grow better at higher temperatures.

b) Bacteria in samples 2 and 3 mutated quickly to adjust to temperature change.

c) Temperature changes do not affect gene expression for growth in sample 1.

d) Bacteria in sample 1 will eventually die out at higher temperatures.

The standard deviation of assembly time (in minutes) is approximately .33.

The standard deviation of a uniform distribution of assembly time is calculated using the following formula:

σ = √((b-a)^2 / 12),

where a is the lower boundary of the range of assembly time (6 minutes) and b is the upper boundary of the range of assembly time (10 minutes).

Substituting a = 6 and b = 10 into the formula yields:

σ = √((10-6)^2 / 12)

σ = √(16/12)

σ = √(1.33)

σ = .33

Therefore, the standard deviation of assembly time (in minutes) is approximately .33.

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Suppose the detector will sound the alarm if more than 2 milligrams of the dye are in your system. It will take 56 minutes for the visit of the doctor

The amount of radioactive dye remaining in your system after t minutes can be modeled as:

A(t) = 11 * (1/2)^(t/20)

where A(t) is the amount of dye remaining after t minutes. We want to find the time t when A(t) = 2 milligrams.

A(t) = 11 * (1/2)^(t/20) = 2

Solving for t:

(1/2)^(t/20) = 2/11

Taking the natural logarithm of both sides:

(t/20) = ln(2/11) / ln(1/2)

Multiplying both sides by 20:

t = 20 * ln(2/11) / ln(1/2)

Using a calculator or logarithm tables, we can estimate t to be approximately 56 minutes. So, your visit to the doctor would take about 56 minutes.

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The probability of drawing a heart as the first card is 1/52.

The probability of drawing a jack as the second card given that the first card is a heart is 4/51 (since there are 4 jacks and 51 remaining cards after one heart is drawn). The probability of rolling the same number twice with a fair six-sided die is 1/6. The total probability is (1/52) * (4/51) * (1/6) = 1/1098.

Assume that there are a finite number of elementary events that are all equally likely to occur in the sample space of the experiment under consideration.

Where total cases equal the extent of the sample space, and favorable instances are those elementary occurrences that belong to E.

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True. Even though the sample is random, it is not representative of the population of interest.

A representative sample is a subset of a population that accurately reflects the total population in terms of the characteristics being measured. In this case, 500 surveys were sent to randomly selected participants in the public recreation program, and only 150 responses were received. This results in a response rate of 30%. The formula for calculating the response rate is (responses/population x 100). By having a low response rate, the sample size is not large enough to accurately reflect the characteristics of the population of interest.

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Answer:

[tex]f^{-1}(x)=\sqrt[4]{x}+2 \qquad \textsf{for $x \geq 0$}[/tex]

Step-by-step explanation:

Given function:

[tex]f(x)=(x-2)^4[/tex]

The domain of the given function is restricted:  

Therefore, the range of the given function is also restricted:  

To find the inverse of a function, swap x and y:

[tex]\implies x=(y-2)^4[/tex]

Rearrange the equation to make y the subject:

[tex]\implies \sqrt[4]{x}=y-2[/tex]

[tex]\implies y=\sqrt[4]{x}+2[/tex]

Replace y with f⁻¹(x):

[tex]\implies f^{-1}(x)=\sqrt[4]{x}+2[/tex]

The domain of the inverse of a function is the same as the range of the original function.  Therefore, the domain of the inverse function is restricted to {x : x ≥ 0}.

Therefore, the inverse of the given function is:

[tex]f^{-1}(x)=\sqrt[4]{x}+2 \qquad \textsf{for $x \geq 0$}[/tex]

Answer:

Below

Step-by-step explanation:

1/8 f  /  2/5 hr    =    1/8 * 5/2 = 5/16 fence per hour

The amount of fence completed in 1 hour is A = 5/16

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

1/8 of a fence is built in 2/5 of an hour

Now , the unit rate of work is given by

A = ( 1/8 ) / ( 2/5 )

On simplifying the equation , we get

A = ( 1/8 ) x ( 5/2 )

A = 5/16 per hour

Hence , the amount of fence completed per hour is ( 5/16 )th

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The Methods used that summarize or organize characteristics of data is descriptive.

Methods used to summarize or organize characteristics of data are referred to as descriptive methods.

Descriptive methods are used to describe the basic features of a set of data, such as its central tendency (mean, median, mode) and dispersion (range, variance, standard deviation). These methods provide a summary of the data, often through the use of graphical representations such as histograms, bar charts, and scatter plots.

The goal of descriptive methods is to understand the underlying structure of the data, identify patterns, and present the data in a clear and meaningful way.

Descriptive methods do not make inferences about a population based on a sample or draw conclusions about causality.

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keeping in mind that a function does not have any X-Repeats, that is, the 1st coordinate in every pair never repeats, Check the picture below.

a. The percentile rank for a fare of $119 is 30%.

b. The percentile rank for a fare of $227 is 91.11%.

c. Based on your first two answers, for $173 train fare would have a percentile rank of approximately 82%.

a. We have to determine the percentile rank for a fare of $119.

Total number of fare below and at the fare $119 = 27

Total fare = 90

The percentile rank for a fare of $119 = Total number of fare below and at the fare $119/Total fare × 100

The percentile rank for a fare of $119 = 27/90 × 100

The percentile rank for a fare of $119 = 0.3 × 100

The percentile rank for a fare of $119 = 30%

b. We have to determine the percentile rank for a fare of $272.

Total number of fare below and at the fare $272= 82

Total fare = 90

The percentile rank for a fare of $272 = Total number of fare below and at the fare $272/Total fare × 100

The percentile rank for a fare of $272 = 82/90 × 100

The percentile rank for a fare of $272 = 0.911 × 100

The percentile rank for a fare of $272 = 91.11%

c. Based on your first two answers, We have to determine which train fare would have a percentile rank of approximately 82%.

The percentile rank for a fare of $119 is 30%.

The percentile rank for a fare of $272 is 91.11.

There are three pricing ranging from $119 to $272. The percentile rank of 82% for the $272 response to section B is closer to 91.11%. $173 is the cost next to $272. Therefore, it makes the most sense that $173 would have a percentile rank of about 82%. Determine how many fares there are

= 12 × 6 + 2

= 72 + 2

= 74 fares

The percentile rank = 74/90 × 100%

The percentile rank = 82.22%

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The complete question is:

Shannon is traveling from New York City to Washington, D.C. She wants to go by train so she can see the views. Since she will be driving home with a family member, she only priced the cost of a one-way ticket on Amtrak for any time of day on February 15. Below is an ordered listing of all fares that were available for selection on that day.

49  88  88  88  119  133  133  133  161  171  173  173  173  272  284

49  88  88  88  119  133  133  161  161  173  173  173  173  272  284

88  88  88  119  119  133  133  161  161  173  173  173  272  272  284

88  88  88  119  133  133  133  161  171  173  173  173  272  272  284

88  88  88  119  133  133  133  161  171  173  173  173  272  284  284

88  88  88  119  133  133  133  161  171  173  173  173  272  284  284

a. Find the percentile rank for a fare of $119.

b. Find the percentile rank for a fare of $272.

c. Based on your first two answers, which train fare would have a percentile rank of approximately 82%?

The amount of money that I will have at the end of 20 years would be =$4,480. That is option D

Compound interest is defined as the interest that is being earned on an account which is based on the rate and the time the investment was made.

The total amount invested (p)= $2,000

The rate of investment (r) = 5%

The time of investment(t)= 12 year

The compound interest warm from that account;

= P×T×R/100.

= 2,000×12×5/100

= 120000/100

= $1200

For the next 8 years with the rate of 8% ;

= 2,000×8×8/100

= 128000/100

= $1280

The total compound interest = $1200+$1280= $2,480

Therefore, the amount of money that I will have at the end of 10 years would be = 2000+2480 = $4,480

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The solution to the system of equation is (4, 1).

System of equation can be solved using different method such as elimination method, substitution method and graphical method. Therefore, the system of equations have been solved using graphical method.

Therefore, the point where the lines or graph intersect is the solution of the system of equation.

Hence, let's find the coordinates where the lines intersect as follows:

The lines intersect at (4, 1)

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Let x be the length of the bottom of the triangle. Then, the second side has a length of more than x * k, where k is some number greater than 1. And the third side has a length of more than x.

The perimeter of the triangle can be represented by the expression:

P = x + (x * k) + (x + y), where y is a positive number that represents the difference between the length of the third side and the length of the bottom of the triangle.

Simplifying the expression:

P = x * (1 + k) + (x + y) = x * (k + 1) + y.

This expression represents the perimeter of the triangle in terms of the length of the bottom of the triangle and the unknown values

Answer:

The next number in the sequence is 17/15.

Step-by-step explanation:

From 1976 until 1987, red M&Ms were removed from packets owing to a research associating the food dye used to color them to cancer.

Arithmetic is defined as working with numbers through addition, subtraction, multiplication, and division. Adding two and two to produce four is an example of arithmetic. Arithmetic is a fundamental branch of mathematics that studies the characteristics of classical operations on numbers such as addition, subtraction, multiplication, division, exponentiation, and root extraction. Arithmetic (derived from the Greek word arithmos, "number") relates to the fundamental components of number theory, arts of mensuration (measuring), and numerical computing (that is, the processes of addition, subtraction, multiplication, division, raising to powers, and extraction of roots).

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The triangular prism has a lateral area of 84 square inches. (Correct choice: D)

In this problem we find the case of right prism with two right triangular bases, then the lateral area is the sum of the area of three rectangles. The area formula for a rectangle is:

A = w · l

Where:

Finally, we determine the lateral area of the triangular prism is:

A = (4 cm) · (7 cm) + (3 cm) · (7 cm) + (5 cm) · (7 cm)

A = 28 cm² + 21 cm² + 35 cm²

A = 84 cm²

The lateral area of the triangular prism is equal to 84 square centimeters.

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Answer: a graph of a line that passes through the points negative 1 comma 2 and 0 comma negative 3.

Step-by-step explanation: the y-intercept is where the line meets the y line which in this case is -3. I used slope formula to find the m of the equation ( slope ) take a look at the attached image to see how I solved it.

Answer:

a graph of a line that passes through the points negative 1 comma 2 and 0 comma negative 3.

Step-by-step explanation: