A gardener wants to fence a circulr garden of diameter 42m. find the length of the barbed wire he needs to purchase if he makes 4 rounds if the fence

Answer:

Step-by-step explanation:

The rate of change is dy/dx=-1025

The key features of this rational function include the following:

Domain: (-∞, -1) ∪ (-1, ∞)

Range: (-∞, -2) ∪ (-2, ∞)

Y-intercept: 1.

X-intercept: 1/2.

Vertical asymptote: x = -1.

Horizontal asymptote​: y = -2.

In Mathematics, an asymptote can be defined as a line which the graph of a given function approaches but would never touch. Additionally, the vertical asymptote of a function simply refers to the value of x which makes its denominator equal to zero (0).

In order to graph any rational function, you should determine the values for which it is undefined. This ultimately implies that, a function is considered as undefined when the value of the denominator is equal to zero, which represents vertical asymptote lines.

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Answer:

Step-by-step explanation:

Part A: The population for this sample survey is all people who live in Virginia, and the sample is the random group of 48,548 people who were interviewed for the survey.

Part B: One method that could have been used to obtain the random sample is simple random sampling. This involves selecting individuals from the population at random, so that each person in the population has an equal chance of being selected. This can be done using a random number generator or by selecting names from a list of the population.

Part C: It's difficult to say whether the estimates are close to the truth about the entire population without more information about the survey methodology and potential sources of bias. However, assuming that the survey was conducted using sound sampling techniques and that the sample is representative of the population, it's possible that the estimates are reasonably accurate. Nevertheless, it's important to keep in mind that survey estimates always have some degree of sampling error, so the true population values could be slightly different from the survey results. Additionally, the survey may not capture people who don't have access to healthcare or who choose not to seek medical care, so the estimates may not be fully representative of the entire population.

Answer: Part A: The population for this sample survey is all people who live in Virginia, while the sample is the 48,548 people who were interviewed in the Virginia Health Survey.

Part B: One method that could have been used to obtain the random sample is simple random sampling. This involves randomly selecting individuals from the population using a random number generator or other randomization method to ensure that each member of the population has an equal chance of being selected. Another method could be stratified random sampling, which involves dividing the population into strata based on relevant characteristics (such as age or income), and then randomly selecting individuals from each stratum in proportion to their representation in the population.

Part C: It is difficult to determine whether these estimates are close to the truth about the entire population without additional information. However, if the sample was selected using appropriate sampling methods (such as simple random sampling or stratified random sampling) and had a large enough sample size, then the estimates are likely to be relatively accurate. The margin of error, which depends on the sample size and variability in the population, can also be calculated to provide an estimate of the range in which the true population value is likely to fall. Overall, the accuracy of the estimates will depend on the quality of the sampling method used, the size of the sample, and the representativeness of the sample in relation to the population.

y = -3/2 x + 24. is the equation of the line in slope intercept form.

The formula for calculating the equation of a line in point slope form is expressed as:

y - y0 = m(x - x0)

where:

m is the slope

(x0, y0) is the point on the line

Using the coordinate points (2, 9) and (4, 6). The slope is calculated as:

Slope = 6-9/4-2
Slope = -3/2

The required equation will therefore be expressed as:

y - 9 = -3/2(x - 2)

2y - 18 = -3x + 6

2y = -3x + 24

y = -3/2 x + 24

Hence the slope-intercept form of the equation is y = -3/2 x + 24.

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Answer:

I don't know yet bye

Step-by-step explanation:

The exponential regression equation that models the data is y = 101 × (0.899)ˣ and when the air pressure is 29 kPa, the altitude is 6.09 km.

To find an exponential regression equation that models the given data, we can use the general form:

y = abˣ

where y is the air pressure and x is the altitude.

Using the provided data, we can substitute the values of x and y into the equation to obtain a system of equations:

When x = 0, y = 101:

101 = ab⁰

101 = a

When x = 1, y = 90:

90 = ab¹

90 = ab

90=101b

Divide both sides by 101:

b=90/101

b= 0.899

Therefore, the exponential regression equation that models the data is:

y = 101 × (0.899)ˣ

To determine the altitude when the air pressure is 29 kPa, we can substitute y = 29 into the equation and solve for x:

29 = 101 × (0.899)ˣ

Dividing both sides by 101:

0.287 = (0.899)ˣ

log(0.287) = log((0.899)ˣ)

log(0.287) = x × log(0.899)

x = log(0.287) / log(0.899)

x = 6.093.

Hence, when the air pressure is 29 kPa, the altitude is 6.09 km.

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The table below gives air pressures in kPa at selected altitudes above sea level measured in

kilometers.

x      Altitude                    0             1              2              3             4             5

y      Air pressure         101         90            79         70           62         54

Write an exponential regression equation that models these data rounding all values to the nearest

thousandth.

Use this equation to algebraically determine the altitude, to the nearest hundredth of a kilometer,

when the air pressure is 29 kPa.

Answer:

4095 yd³

The volume of any figure is the total space enclosed inside of any figure. For example, the total space inside the cube is the volume of the cube. The formula to find the volume of a cube is (side)³ or (side)(side)(side) Please also note that volume is usually labelled in cubic units.

Here, we are given a figure that is 3-dimensional. Therefore, the volume of this 3-dimensional figure must be in cubic units. We can also see that the figure has been split into two 3-dimensional figures. Thus, the sum of those divided 3-dimensional figures will result in the volume of the figure.

Step-1) Find the volume of both 3-dimensional figures:

Volume of cuboid = Length × Width × Height

Volume of trapezoidal prism = Area of base × Length

Step-2) Add the volumes of both prisms.

Volume of figure = Volume of cuboid + Volume of trapezoidal prism

Volume of figure = 1890 yd³ + 2205 yd³ = 4095 yd³

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The stated statement states that there are 360000 different ways to arrange them all in a line without any freshman standing close to one another.

Standing, also known as nov. 2, is a posture when the body is only supported by the feet while being held in an upright (orthostatic) position. The body moves slowly back and forth between the leg in the sagittal plane, although appearing to be immobile.

The total amount of ways they can position in a line without any further restrictions and the total amount of times they are standing in a line can both be included, but no undergraduates actually standing next to one another.

The answer we seek in accordance with the inclusion-exclusion principle is the difference between the two.

Furthermore take note of the phrase "Everyone is identifiable" in the issue, which suggests that "order matters."

The total number of configurations in which they can line up is the iteration of nine persons, which is:

P⁹ * 9 = 9! = 362880

The amount of different ways they can be in a line without standing close to one other is the next thing we take into account.

The sophomores will be taken into consideration initially. We have strategies for lining up the sophomores.

P⁴ * 4= 4! =24

But we haven't yet taken into account the freshman. Currently, we are not allowed to place two freshmen in front of or behind two sophomores, or between two freshmen. We shall take into account any location the freshman might possibly fit inside the line.

In the figure below, B stands for sophomores, and X for an open spot.

The line appears as follows once the sophomores have been taken into account:

X B X B X B X B X

Each freshman must move to an open area since no two undergraduates can fit in the exact same X place.

This is how the line will appear. (B stands for sophomores, G for freshmen)

G B G B G B G B G

The freshmen's order, however, has not been taken into account. They can be arranged in several ways.

P⁵ * 5 = 5!= 120 ways.

The number of sophomore arrangements and indeed the number of freshman arrangements are multiplied:

There are several methods to arrange them all in a line without any freshman standing near to one another.

Add it to the total variety of ways, and you'll have our needed response: 362880-2880=360000.

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Answer:

3

Step-by-step explanation:

Amplitude is the absolute value of the number in front

3cos(2x) + 5

The volume of the stump in cubic inches is approximately 2,214.53 cubic inches

First, we need to convert the height of the stump from feet to inches, since the radius is given in inches:

1.3 ft = 15.6 in

Next, we can use the formula for the volume of a cylinder:

V = πr^2h

where V is the volume, r is the radius, and h is the height.

We are given the radius as 6 in and the height as 15.6 in, so we can plug in these values and simplify:

V = π(6 in)^2(15.6 in)

V = π(36 in^2)(15.6 in)

V = 2,214.53 cubic inches (rounded to two decimal places)

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The solution is, the correct option is, A.

Function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable.

here, we have,

The translation of a sin function can be modeled by the form: P(t)=Asin(Bx+C)+D

Where:

A = the curve's amplitude (highest and lowest points)

The period = (2[pi])/ |B|

The phase shift (horizontal shift) = (-C)/B

D = vertical shift

By looking at the function we are given: P(t)=30sin(2[pi]t)+100,

We can see that the amplitude (the curve's highest and lowest points) = 30.

The phase shift (C) or in this case 't' = 0 (so there is no horizontal shift)

The period = 1

And D (the vertical shift) = 100

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200 pounds need to collect to earn the $50.00. Divide the cost per pound from the total amount needed, [tex]\frac{50.00}{0.25}[/tex]= 200 pounds.

The official money of the U.k. and its regions is the GBP, or British pound sterling. The Pound is the earliest currency that is still accepted as legal tender in the entire world. The GBP, represented by pound sign (£), has one of the greatest trade volumes worldwide.

The development of the pounds sterling -The Latin word "libra," which means balance and weight, is where the name "pound sterling" comes from. During the years, the pound banknotes underwent various revisions before being initially printed by the Bank of England and over 300 years ago.

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Answer:

112cm³

Step-by-step explanation:

Let us ignore the bottom part of the figure and first find only the volume of the cuboid at the top

from the figure we know that

length of the cuboid is 10 cm

Width is 2 cm

height is 5 cm

now the formula for Volume of cuboid is Length×Width×Height

so,

Volume of the Upper Cuboid = 10×2×5= 100cm³ ---(1)

Now we will ignore the cuboid on top and find the volume of the one at the bottom

From the figure, we know that its dimensions are

length = 2cm

height = 3cm

width = 2cm

Volume of the lower cuboid = 2×2×3 = 12cm³ ---(2)

Adding (1) and (2)

100cm³ + 12 cm³ = 112cm³

Therefore the volume of the given figure is 112cm³

The volume of the box is 112 cm³.

We have,

The figure can be considered as two boxes.

Now,

One box:

Volume.

= Length x Width x height
= 10 x 2 x 5

= 100 cm³

Another box:

Volume.

= Length x Width x height
= 2 x 2 x 3

= 12 cm³

Now,

The volume of the box.

= 100 + 12

= 112 cm³

Thus,

The volume of the box is 112 cm³.

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Matrices A and B are non-invertible matrices that can be added together to form an invertible matrix. To find these matrices, we can use the following steps:

Step 1: Choose a matrix A that is not a diagonal matrix and is not invertible. One example of such a matrix is

[tex]A = \left[\begin{array}{ccc}1&1\\0&0\end{array}\right][/tex]

Step 2: Choose a matrix B that is not a diagonal matrix, is not invertible, and is not a scalar multiple of matrix A. One example of such a matrix is
[tex]B = \left[\begin{array}{ccc}0&0\\1&1\end{array}\right][/tex]

Step 3: Add the matrices A and B together to form the matrix A+B. This matrix will be invertible, as shown below:

[tex]A+B = \left[\begin{array}{ccc}1&1\\0&0\end{array}\right]+\left[\begin{array}{ccc}0&0\\1&1\end{array}\right]=\left[\begin{array}{ccc}1&1\\1&1\end{array}\right][/tex]

Step 4: Verify that the matrix A+B is invertible by finding its determinant. The determinant of a 2x2 matrix is given by:

det(A+B) = (1)(1) - (1)(1) = 0

Since the determinant of the matrix A+B is not equal to zero, the matrix is invertible.

Therefore, the matrices [tex]A = \left[\begin{array}{ccc}1&1\\0&0\end{array}\right][/tex] and [tex]B = \left[\begin{array}{ccc}0&0\\1&1\end{array}\right][/tex] are non-invertible matrices that can be added together to form an invertible matrix [tex]A+B =\left[\begin{array}{ccc}1&1\\1&1\end{array}\right][/tex].

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Answer:

Photo below.

Step-by-step explanation:

Red Line = y=3x−3/4

Blue Line =  y=−x/3−3/2

Hope it helped!

Answer:

14

Step-by-step explanation:

So, 49 divided by 7 is 7 so there are 7 groups of 7 strawberries. With each of those 7 groups there are 2 blueberries. So, you are then going to multiply 7 by 2 and that gives you 14 blueberries.

The first and second lengths are not possible lengths of triangle.

The third and fourth lengths are possible lengths of triangle.

For the first case; 3 ft, 5 ft, 9 ft: Not possible. In a triangle, the sum of the lengths of any two sides must be greater than the length of the third side. However, in this case, 3 ft + 5 ft = 8 ft, which is less than 9 ft.

For the second case. 11 cm, 6 cm, 17 cm: Not possible. Using the same reasoning as above, we see that 6 cm + 11 cm = 17 cm, which means that the three sides cannot form a triangle.

For the third case. 4 in., 4 in., 6 in.: Possible. The sum of any two sides is greater than the third side, since 4 in. + 4 in. = 8 in., which is greater than 6 in. Therefore, these lengths can form a triangle.

For the fourth case. 16 yd, 10 yd, 12 yd: Possible. Again, we see that the sum of any two sides is greater than the third side, since 10 yd + 12 yd = 22 yd, which is greater than 16 yd. Therefore, these lengths can form a triangle.

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Answer:12

Step-by-step explanation:

The following terms are;

Chord = EJ

Tangent line; GD

Secant line ; KH

For a circle, take two points on its circumference. That divides the circumference of the assumed circle in two parts. Those both parts are called arcs of the circle. The bigger part will be called the major arc, and the smaller one will be called the minor arc.

WE are given that c is the center, FE is a diameter, GD intersects the

circle at E, and KH intersects the circle at E and 1.

Here we have to find the following;

If the assumed circle has center O and chord AB, then if there is perpendicular from O to AB at point C, then that point C is bisecting the line segment AB.

Chord = EJ

Tangent line; GD

Secant line ; KH

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A) the z-critical value associated with a 99% confidence interval is 2.58. B) the z-critical value associated with a 95% confidence interval is 1.96. C) the z-critical value associated with a 90% confidence interval is 1.64. D)  the z-critical value associated with an 80% confidence interval is 1.28.

The z-critical value (or the critical z-value) is the number of standard deviations from the mean that corresponds to a given level of significance in a two-tailed z-test. It is used in statistical hypothesis testing to determine whether to reject or fail to reject the null hypothesis.

A) For a 99% confidence interval, the area in each tail is (1-0.99)/2 = 0.005. Using the provided tool and selecting "two tails", we can find the z-critical value associated with this probability:

z-critical value = 2.58

Therefore, the z-critical value associated with a 99% confidence interval is 2.58.

B) For a 95% confidence interval, the area in each tail is (1-0.95)/2 = 0.025. Using the provided tool and selecting "two tails", we can find the z-critical value associated with this probability:

z-critical value = 1.96

Therefore, the z-critical value associated with a 95% confidence interval is 1.96.

C) For a 90% confidence interval, the area in each tail is (1-0.90)/2 = 0.05. Using the provided tool and selecting "two tails", we can find the z-critical value associated with this probability:

z-critical value = 1.64

Therefore, the z-critical value associated with a 90% confidence interval is 1.64.

D) For an 80% confidence interval, the area in each tail is (1-0.80)/2 = 0.10. Using the provided tool and selecting "two tails", we can find the z-critical value associated with this probability:

z-critical value = 1.28

Therefore, the z-critical value associated with an 80% confidence interval is 1.28.

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Answer:

Step-by-step explanation:

We can use proportionality to find out how much Gino will get paid if he has to plow for 40 hours. Since we know that he gets paid $640 for 20 hours of work, we can set up a proportion to find out how much he will get paid for 40 hours of work.

The proportion can be written as:

Payment for 20 hours / 20 hours = Payment for 40 hours / 40 hours

We can simplify this proportion to:

Payment for 20 hours / 20 = Payment for 40 hours / 40

Substituting the given values, we get:

640 / 20 = Payment for 40 hours / 40

Simplifying this equation, we get:

32 = Payment for 40 hours / 40

Multiplying both sides by 40, we get:

Payment for 40 hours = 32 * 40

Payment for 40 hours = 1280

Therefore, Gino will get paid $1,280 if he has to plow for 40 hours. Hence, the correct answer is (D) $1,280.

Answer:

1.280$

because 20hrs=640 so If it's 40hrs it will add additional 640

By making and solving the equations we know that the number of children and adults that swam at the pool is 350 and 335 respectively.

An equation is a mathematical statement that contains the symbol "equal to" between two expressions with identical values.

As in 3x + 5 = 15, for example.

There are many different types of equations, including linear, quadratic, cubic, and others. Let's learn more about math equations in this tutorial.

For instance, a formula might be 3x - 5 = 16.

After solving this equation, we learn that the value of the variable x is 7.

So, make equations as follows:

c + a = 685 (1)

c = 685 - a

Now, substitute c = 685 - a in the 2nd equation as follows:

1.75c + 2a = 1.282.50 (2)

1.75(685 - a) + 2a = 1,282.50

1,198.75 - 1.75a + 2a = 1,282.50

0.25a = 83.75

a = 83.75/0.25

a = 335

Then, the children:

c = 685 - a

c = 685 - 335

c = 350

Therefore, by making and solving the equations we know that the number of children and adults that swam at the pool is 350 and 335 respectively.

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The linear equation that has no solutions with y = (5/4)x - 7 is

2y = (5/2)x - 14

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

We have,

y = (5/4)x - 7

We can create a linear equation that has no solutions with y = (5/4)x - 7.

Step 1:

y = (5/4)x - 7

Multiply 2 on both sides.

2y = (5/2)x - 14

Thus,

2y = (5/2)x - 14 is the linear equation that has no solutions with the given equation.

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To construct a 2x2 matrix B such that AB is the zero matrix, we need to find two different nonzero columns for B that will result in the product of AB being the zero matrix. One way to do this is to choose the columns of B such that they are the negatives of the rows of A. This will result in the product of AB being the zero matrix.

Let A = [[a,b],[c,d]]

We can choose the columns of B to be [[-a,-c],[-b,-d]]. This will result in the product of AB being the zero matrix.

So, B = [[-a,-b],[-c,-d]]

AB = [[a,b],[c,d]] * [[-a,-b],[-c,-d]] = [[0,0],[0,0]]

Therefore, the 2x2 matrix B that will result in the product of AB being the zero matrix is B = [[-a,-b],[-c,-d]].

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The most accurate calculation for the product of 2, 9, and 11, is 1, or 0 + 1.

Best estimate refers to the figure arrived at by an assessor using deterministic techniques that most accurately captures the anticipated result without optimism or conservatism.

To estimate a number is to round it up to the nearest full number.

We now have February 9 and November 11.

Hence, as 2/9 is closer to 0 than 0.5, we will estimate it to be 0.

Similarly, we will estimate 10/11 as 1 since it is closer to 1 than 0.5.

Hence, 0 + 1 = 1 is the result of adding up their estimates.

In conclusion, 0 + 1 = 1 is the best estimate for the product of the numbers 2/9 and 10/11.

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Answer:

275.7 ft/s^2 appr.

Step-by-step explanation:

47mi*5280=248160 feet per hour.

4 seconds = 4/(60*60)=1/900 of an hour.

1/900*248160=275.7 feet/s^2 approx.

Answer:

The car's acceleration is 17.2 ft/s².

Step-by-step explanation:

First we need to do some unit conversions.

Unit Conversions

There is 60 seconds in 1 minute.

There is 60 minutes in 1 hour.

So therefore there is 3600 seconds in 1 hour.

There is 5280 feet in 1 mile.

Now we can create an expression convert mph to ft/s

Multiply the speed value in mph by [tex]\frac{5280}{3600}[/tex] to get the speed in ft/s

We can simplify [tex]\frac{5280}{3600}[/tex]  to [tex]\frac{22}{15}[/tex].

Multiply the speed value in mph by [tex]\frac{22}{15}[/tex] to get the speed in ft/s.

We are given a speed of 47 mph.

[tex]47*\frac{22}{15}=68.93[/tex]

Numerical Evaluation of Acceleration

Now we can solve for the acceleration.

The formula for acceleration is

[tex]a=\frac{v_f-v_i}{t}[/tex]

In this example we are given

[tex]v_f=68.93\\v_o=0\\t=4[/tex]

Substituting our values into the equation for acceleration yields

[tex]a=\frac{68.93-0}{4}[/tex]

Evaluate [tex]\frac{68.93-0}{4}[/tex]

[tex]a=17.23[/tex]

Rounding to 1 decimal place gives us

[tex]a=17.2[/tex]

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This shows that y is proportional to x with a constant of proportionality r.

Therefore, the constant of proportionality in the equation y = rx is r.

Two expressions joined by the equal sign constitute an equation, which is a statement in mathematics. An illustration of a formula is 3x - 5 = 16. After resolving this equation, we discover that the value of x is 7.

The given equation is y = rx.

To find the constant of proportionality, we can use the definition of proportionality, which states that two variables are proportional to each other if they have a constant ratio.

In this case, we can write:

y/x = r

This shows that y is proportional to x with a constant of proportionality r.

Therefore, the constant of proportionality in the equation y = rx is r.

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Answer:

Step-by-step explanation:

La ecuación y = -7x - 5 es una ecuación lineal en la forma y = mx + b, donde "m" es la pendiente y "b" es el punto de intersección en el eje y. Por lo tanto, podemos identificar la pendiente y el punto de intersección de la línea directamente de la ecuación.

Pendiente:

La pendiente "m" de la línea se encuentra en el coeficiente que acompaña a "x" en la ecuación de la línea. En este caso, la pendiente es "-7", por lo que la pendiente de la línea es -7.

Punto de intersección:

El punto de intersección "b" se encuentra en el término independiente de la ecuación de la línea, que es el número que no tiene una "x" al lado. En este caso, el punto de intersección es "-5", por lo que la línea cruza el eje y en el punto (0,-5).

Por lo tanto, la pendiente de la línea es -7 y el punto de intersección es (0,-5).

Answer: Y-intercept: -5, Slope of the line: -7 or -7/1

Step-by-step explanation:

The equation for the slope is y=mx+b.

m= slope of the line

b= y-intercept

So when you take the equation y=-7x-5, you take out those plugged in values.

So the slope of the line is -7 (or -7/1) and the y-intercept is -5.

you would save $6,000 in annual fuel expenses.

The sum of all values divided by the total number of values determines the mean (also known as the arithmetic mean, which differs from the geometric mean) of a dataset. The term "average" is frequently used to describe this measure of central tendency.

Given,  you drive 40,000 miles per year and gas averages $4 per gallon

Since,

Fuel expenses = (Miles driven / Miles per gallon) x Price per gallon

For the SUV, with an average of 16 miles per gallon, the fuel expenses would be:

Fuel expenses for SUV = (40,000 / 16) x 4 = $10,000

For the hybrid car, with an average of 40 miles per gallon, the fuel expenses would be:

Fuel expenses for hybrid car = (40,000 / 40) x 4 = $4,000

To find the difference in fuel expenses between the two vehicles, we subtract the fuel expenses for the hybrid car from the fuel expenses for the SUV:

$10,000 - $4,000 = $6,000

Therefore, by owning a hybrid car averaging 40 miles per gallon instead of an SUV averaging 16 miles per gallon, you would save $6,000 in annual fuel expenses.

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Answer:

There were 261 Cheeseburgers and 87 Hamburgers sold on Tuesday

Step-by-step explanation:

Let's write some equations where H=Hamburgers and C=Cheeseburgers:

1) H+C=348

2) C=3H

1) Substitute 3H as C in the first equation:

3H+H=348

2) Combine alike terms:

4H=348

3) Divide both sides by 4:

H=87

4) Now, substitute 87 as H in the first equation:

87+C=348

5) Subtract 87 from both sides:

C=261

18x+30

Step-by-step explanation:

O think That's the answer...