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The solution for f(-2) in the function f(x) = x² + 3 is 7

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

f(x) = x 2 +3

To make the equation legible, we need to rewrite it

So, we have the following representation

f(x) = x² + 3

Also from the question, we have

f(-2)

This means that the value of x is -2, and we calculate f(x) when x = -2

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

f(-2) = x² + 3

So, we have the following equation

f(-2) = (-2)² + 3

Evaluate

f(-2) = 7

Hence, the solution is 7

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Answer:

In standard form the equation would be

6x -9y = 54

Step-by-step explanation:

Let x = 0

-9y = 54  Divide both sides by -9

y = -6

(0,-6)

Let y = 0

6x = 54  Divide both sides by 6

x = 9

(9,0)

Answer:

False. The center of a semisimple Lie algebra is usually not trivial.

Step-by-step explanation:

The center of a semisimple Lie algebra is the set of elements of the Lie algebra that commute with all other elements in the algebra. In most cases, the center of a semisimple Lie algebra is not trivial, meaning it contains at least one non-zero element. For example, the center of the simple Lie algebra sl(2,C) contains the two-dimensional Lie algebra spanned by the scalar matrices I and -I. The center of the Lie algebra so(5,C) is spanned by the five-dimensional Lie algebra spanned by the matrices diag(1,1,1,-1,-1). These examples demonstrate that the center of a semisimple Lie algebra is usually not trivial.

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A: 16.09 %  of the survey respondents liked neither hamburgers nor burritos

B) 0.65  is the marginal relative frequency.

C) The lowest joint relative frequency of those who like Hamburgers but not burritos.

The ratio of a row total's or column total's frequency to the overall frequency of the data is known as marginal relative frequency. It is frequently used to examine broad trends in a single type of data.

Given:

                          Like Hamburgers    Does Not Like Hamburgers    Total

Likes burritos                  39                           38                                   77

Does not like burritos     95                           33                                 128

Total                                 134                           71                                 205

A) There are 33 such respondents.  

So, percentage is

= 33/205 x 100

= 16.095

B) It will be the ratio of the sum of the customers that like hamburgers to the total number of respondents

So, the ratio is

= 134/205

= 0.65 :1

Part C:  For this, we need to find the ratio of all the four data with the total.

Those who like Hamburgers and burritos

= 39/134

Those who like Hamburgers but not burritos

= 95/134

Those who like burritos but not Hamburgers

=38/71

Those who do not like burritos or Hamburgers = 33/71

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1) curl = del x

2) grad(div ) = del(div )

3) div(curl(grad )) = div(curl(grad))

What is Scalar field and Vector field?

1) The curl of a vector field is a vector field that describes the local rotational motion of the field. It is defined as the cross product of the del operator (a vector operator that operates on scalar and vector fields) and the vector field:

    curl = del x

2) The gradient of the divergence of a vector field is a scalar field that describes the local rate of change of the divergence of the field. It is defined as the del operator applied to the divergence of the field:

   grad(div ) = del(div ).

3) The divergence of the curl of the gradient of a scalar field is a scalar field that describes the local rate of change of the curl of the gradient of the field. It is defined as the divergence of the curl of the gradient of the field:

   div(curl(grad )) = div(curl(grad)).

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The formula hu; vi d t .u/t .v/ defines an inner product on v because it is linear equation in u and v, symmetric, and positive definite.

The formula hu; vi d t .u/t .v/ defines an inner product on v because satisfies all of the requirements of an inner product. Specifically, it is linear in both u and v, meaning that ah; vi bh; vi for any scalar a and any two vectors u, v. This means that it is distributive over addition, so hu b c; v i d hu b; v i C hc; v i. It is also symmetric, so hu; v i d hv; ui, which is necessary for hu; ui to be considered a valid inner product. Finally, it is positive definite, meaning that hu; ui d k uk2 0 for all vectors u 6 d 0. This means that for any two vectors u, v, the inner product of hu; vi d t .u/t .v/ is a valid inner product on the vector space v.

Proof: Let u, v ∈ V .

1.hau b; v i d t .au b/t .v/ d at t .u/t .v/ bt t .v/ d ah; vi bh; vi

2. hu; vi d t .u/t .v/ is linear in v :

h u; av b i d t .u/t .av b/ d at t .u/t .v/ bt t .u/t .v/ d ah; vi bh; vi

3. hu; vi d t .u/t .v/ is symmetric:

h u; v i d t .u/t .v/ d t .v/t .u/ d hv; ui

4. hu; vi d t .u/t .v/ is positive definite:

h u; u i d t .u/t .u/ d k t .u/ k2 d k uk2 0 for all u 6 d

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t on rn . 14. let t be a one-to-one linear transformation from a vector space v into rn . show that for u, v in v , the formula hu; vi d t .u/t .v/ defines an inner product on v .

Based on the survey results, the proportion of people who took a trip that included a visit to a theme park is 167/1655 = 0.101. This means that approximately 10.1% of the people who took a trip included a visit to a theme park.

It is not clear what the management consultant is trying to do with this information. However, the proportion of people who took a trip that included a visit to a theme park can be used as a measure of the popularity of theme parks as a vacation destination.

It could also be used to estimate the demand for theme park tickets or to develop marketing strategies for theme parks.

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Answer:

To find the number of integral solutions for x in the given inequality, we can first solve the inequality to find the range of values that x can take on. To do this, we need to isolate the x term on one side of the inequality, so let's start by subtracting 9 from both sides of the inequality:

-69 ≤ 7x + 9 ≤ 49

-9 ≤ 7x ≤ 40

Next, we can divide both sides of the inequality by 7 to isolate the x term:

-9/7 ≤ x ≤ 40/7

The result of this calculation is a range of values for x, but we are looking for the number of integral solutions, which means we need to find the number of whole numbers that x can take on within this range. In this case, we can see that the range of possible values for x is from -1 to 5, and there are 5 whole numbers within this range (-1, 0, 1, 2, 3, 4, 5), so there are 5 integral solutions for x in this inequality.

In general, to find the number of integral solutions for x in an inequality of the form a ≤ bx + c ≤ d, where a, b, c, and d are constants, you can follow these steps:

1.Solve the inequality to isolate the x term on one side, by subtracting c from both sides and then dividing both sides by b. This will give you the range of possible values for x.

2.Count the number of whole numbers within this range to find the number of integral solutions for x.

Step-by-step explanation:

The Calf weigh about 75 kg.

Given data :

The total weight of a giraffe and her calf is 904 kilograms.

Weight of the giraffe is 829 kg

So the weight of the calf = Total weight - weight of giraffe

                                         =  904 - 829 = 75

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The probability that she makes at least one free throw is b. 0.91. Probability theory is a branch of mathematics that is used to model and analyze random events.

Probability can be used to predict the likelihood of different outcomes in a wide range of situations, from games of chance to scientific experiments to everyday events. Probability is a measure of the likelihood of an event occurring. It is expressed as a number between 0 and 1, with 0 indicating that an event is impossible and 1 indicating that an event is certain.

To find the probability that the player makes at least one free throw in two attempts, you can subtract the probability that she misses both free throws from 1. The probability that she misses both free throws is 0.09, so the probability that she makes at least one free throw is:

1 - 0.09 = 0.91.

Therefore, the correct answer is 0.91, or choice (b).

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The probability of getting 3 successes is 0.00463 Or 0.46%.

In an experiment with two possible outcomes, the likelihood of exactly x successes on n repeated trials is known as the binomial probability (commonly called a binomial experiment). The binomial probability is [tex]P(x) = ^nC_xp^xq^{n-x}[/tex] if the likelihood of success on a given trial is p.

Given, A fair die is rolled three times. Getting a 4 is considered 'success', while all other outcomes are 'failures'.

So, The probability(p) of getting a 4 on a die is (1/6), and hence the probability of failure(q) = 1 - 1/6 = 5/6.

Also given, n = 3.

Therefore, The probability of getting 3 successes is,

[tex]P(x = 3) = ^3C_0(1/6)^3\times(5/6)^0[/tex].

[tex]P(x = 3) = 1\times\frac{1}{216}\times1[/tex]

[tex]P(x = 3) = \frac{1}{216}[/tex].

So, the probability of 3 successes is 1/216.

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There are X automobiles, with a mean of 12.5 cars. The standard deviation for X is also SD = 12.0.

First, a data set's mean and standard deviation convey distinct information. The average (center) of a data collection is provided by mean (it is a measure of central tendency). You may learn about the range (dispersion) of data around the mean by looking at the standard deviation. We may investigate a data set's characteristics and characterize it using both the mean and standard deviation. To provide confidence intervals for data that has a normal distribution, they are frequently combined. If two or more data sets need to be compared:

The mean reveals whether data set is, on average, greater or lower (or better or worse). We can determine whether data set has a wider dispersion using the standard deviation (higher standard deviation means data is more spread out from the mean). Second, there are variations in how each metric is calculated. In particular, we utilize squaring to get the standard deviation but not the mean. We completely avoid using squaring when determining the mean of a data collection. Simply multiplying the total number of data points in the set by the sum of all the values in the data set yields the answer.

The mean is calculated as follows:

Mean = (all data values added together) / (number of data values)

However, when calculating standard deviation, we do employ squaring. We take the square of the deviation between each data point and the mean in particular.

The standard deviation equation is as follows:

Finally, when we add the identical value to each data point in the data set, the mean and standard deviation "respond" differently. If we multiply every value in a data collection by the constant "K":

No of the size of the data collection, the mean rises by precisely K.

No matter how many observations are in the data collection, the standard deviation does not vary. The identical value is then added.

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Answer:

y=5x+0

Step-by-step explanation:

wouldn't the equation be something like y=5x+0?  If x=5 then x would be the slope. So then if the slope is 5 you'd start off your equation y=5x but there might not be a y-int for this equation because the equation only has an x and there is no y.

(Not sure if you understand it, but if it were to me I'd do something like this because there is only one number in the equation, hope this helps in some way....)

The relationship between the quantity of firemen and the amount of damage brought on by a fire is, in fact, created by a third party. Thus, choice A is the best one.

Firefighter

A fireman is a first responder and rescuer who has received significant training in firefighting. They are primarily responsible for putting out dangerous flames that endanger life, property, and the environment as well as for rescuing humans and, in some circumstances, animals from perilous situations.

The third aspect

The numbers that divide 3 in three equal parts with no remainders are known as its factors. As is well known, the earliest odd prime number is three. The three components and their pair can be expressed in both good and negative ways. For illustration, the pair factor of 3 is shown.

It is true to say that a third party is to blame for the correlation between the number of firefighters and the amount of damage a fire causes. So, option A is the best choice.

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The factors of 3 are the numbers that split it into three equal pieces with no remainders. The oldest odd prime number is three, as is common knowledge. The three elements and their paired expressions have both positive and negative connotations. The pair factor of three is displayed as an illustration.

It is accurate to say that there is a third party at fault for the association between the quantity of firefighters and the scope of a fire. As a result, option A is the best one.

If you isolated x in the second equation to use the substitution method. -3y + 12 expression we substitute into the first equation.

The algebraic approach to solving simultaneous linear equations is known as substitution method. The value of one variable from one equation is substituted in the second equation in this procedure, as the name implies.

The substitution method has three straightforward steps, which are listed below:

2x + y = 8

-x - 3y = -12

__________

-3y + 12

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Using mathematical operations, the amount that Louisa paid for the entry fee is $12.5.

The basic mathematical operations include addition, subtraction, division, and multiplication.

These mathematical operations combine values, numbers, and variables with mathematical operands to solve mathematical problems.

For instance, the variable cost per ride ticket is given as $1.25.  There are a total of 25 ride tickets spent by Louisa.

Mathematically, the total variable cost is the product of per unit cost and total ride tickets.

The total variable cost is subtracted from the total amount spent to determine the fixed entry fee.

Fee per ticket = $1.25

Total amount spent by Louisa = $43.75

The number of ride tickets = 25

The fixed entry fee per person = $12.50 ($43.75 - $1.25 x 25)

Thus, whereas, Louisa spent $1.25 per ride ticket, she spent $12.50 as the fixed entry fee.

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-sint is the acceleration at time t.

Acceleration is the rate of change of the velocity of an object with respect to time.

Given, the height (cm) of an object oscillating up and down at the end of a spring is s(t) = 100 + cos t.

We need to find the  acceleration at time t.

s(t) = 100 + cos t.

To find the acceleration we have to differentiate the above equation.

d/dt=d/dt(100+cost)

=d/dt(100)+d/dt(cost)

=0+(-sint)

s'(t) = -sint.

Hence, the acceleration at time t is -sint.

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The area of the region between the two curves by integrating over the y-axis, x = y² and x = 9 is 18 square units.

The area where the "area under the curve" is common to both the straight line and the given curve is called the bounding area. Therefore, the area common to both can be found by subtracting the area under line T from the area under curve C. The x constraint for computing the area under the curve can be found by solving the system of equations for the coordinates of the intersection of the line and the curve.

We have given the curve , x = y² and line x = 9 and bounded region is A in above graph of x = y² and line x = 9.

Now, we determine the intersection points of curve and line,

put x = 9 in curve equation we get,

y² = 9 => y = +-√9

= + 3 or -3

Total area bounded by curve and line, A = integration of curve over y from y = -3 to y= 3

= ₋₃∫³x dy = ₋₃∫³y² dy = ₋₃[ y³/3]³

= [ (3)³/3 - (-3)³/3]

= 9 + 9 = 18

Hence, the required area is 18 square unit.

Complete question:

determine the area (in units2) of the region between the two curves by integrating over the y-axis. x = y² , x = 9

Answer:

Step-by-step explanation Let a =3 and b=3 we are given this information.

6a^3-1/9b^4

Substitute values for a=3 and b=3

=6(3)^3-1/9(3)^4

=6 x27-1/9 x 81

=162-9

153

reminder 3^3=27=3 x 3 x 3

reminder 3^4=81=3 x 3 x 3 x 3

Step-by-step explanation:

You start with x+1=7x-5

Basically you want all the x's on one side and all the constants on the other

(x+1)+5=(7x-5)+5, to get rid of the 5 on the right side

(x+6)-x=7x-x, to get rid of the x on the left side

We are now left with 6x=6

No we simplify, 6x/6=6/6

Now we have x=1, which is the answer

I hope this made sense.

x= 1.

[tex](x+1)=(7x-5)\\ \\x+1=7x-5[/tex]

[tex]x+1-1=7x-5-1\\ \\x=7x-6[/tex]

[tex]x-7x=7x-6-7x\\ \\-6x=-6[/tex]

[tex]\frac{-6x}{-6} =\frac{-6}{-6} \\ \\x=1[/tex]

[tex](1)+1=7(1)-5\\ \\2=7-5\\ \\2=2[/tex]

That's correct!

x= 1.

The demand function is given by the expression -

D{x} = mn(a²x + 2b + b²)

Given is the revenue function as follows -

f(x) = mn (ax + b)²

The revenue function is simply [x] multiplied by the demand function.

R{x} = x (D{x})

The revenue function is -

f(x) = mn (ax + b)²

So, the demand function can be written as -

mn(ax + b)² = x (D{x})

D{x} = {mn(ax + b)²}/x

D{x} = {mn(a²x² + b² + 2abx)}/x

D{x} = {a²x²mn + mnb² + 2bmnx}/x

D{x} = a²xmn + 2bmn + mnb²

D{x} = mn(a²x + 2b + b²)

Therefore, the demand function is given by the expression -

D{x} = mn(a²x + 2b + b²).

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The largest sample volume is 7/8 gallon.

Space is occupied by every three-dimensional object. Its volume serves as a gauge for this area. The area contained by an object's boundaries in three-dimensional space is referred to as its volume. Another name for it is an object's capacity.

When filling an aquarium, water tank, or bottle with water, for example, knowing the volume of the container can help us calculate how much water is needed to fill it.

According to the information in the query.

The smallest sample has a 1/8 gallon volume.

Because

the volume of the largest sample/volume of the smallest sample equals 7/8/1/8

= 7/8× 8/1 = 7,

We can conclude that the volume of the largest sample is 7 times that of the smallest sample.

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Full question

The plot below shows the volume of 11 river water samples collected by an ecologist. All measurements are rounded to the nearest 1/8 gallon. How many times as great is the volume of the largest sample than the volume of the smallest sample?

The time it takes Carly to walk 7 miles is 91 minutes

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

Time = 39 minutes

Distance = 3 miles

The speed can be calculated as

Speed = Distance/Time

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

Speed = 3 miles/39 minutes

So, we have

Speed = 1/13 miles per minute

From the question, we have

Distance = 7 miles

Recall that

Speed = Distance/Time

Make time the subject

Time = Distance/Speed

So, we have

Time = 7/(1/13)

Evaluate

Time = 91 minutes

Hence, the time is 91 minutes

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The required equation of the line passing through (-8, 1) and parallel to x - 4y = 4 is y = 1/4x + 1.

The slope of the line is a tangent angle made by line with horizontal. i.e. m =tanx where x in degrees.

Here,
Slope of the given line x - 4y = 4
y = 1/4x - 1
m = 1/4

The slope of the parallel lines is always equal

Now,
Equation of the parallel line passing through the point (-8, 1) is given as,
y - y₁ = m (x - x₁)
y -1 = 1/4(x + 8)
y = 1/4x + 1

Thus, y = 1/4x + 1 is the needed equation for the line passing through (-8, 1) and parallel to x - 4y = 4.

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The SUV will be $5,299.13 worth than the car 5 years after their model years.

What is the meaning of rounded to the nearest cent?

Look at the number to the right of the whole cents when rounding money to the closest cent. In this instance, it is 9. Increase the cents by one if the figure is five or above. The cents should remain the same if the number is four or less. Given that 9 is more than 5, $3.299 equals $3.30.

Given that,

The value of a car can be predicted by using the function

f(x)=12,000(0.89)^x

Where x years from its model year.

To find the current value of the car, put x = 0 in the model equation:

f(0)=12,000(0.89)^0

f(0) = 12,000.

To find the value of the car after 5 years, put x = 5 in the model equation:

f(5)=12,000(0.89)^5

f(5) = 6700.871

The difference of the value of car is 12,000 - 6700.871 = $5299.129 = $5299.13 (rounded to the nearest cent)

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If the correlation coefficient is 0.4, the total variation in salary can be explained by gender is 16%.

A statistical concept known as the correlation coefficient aids in establishing a relationship between expected and actual values gained through statistical experimentation. The estimated correlation coefficient's value explains how well the expected and actual values match.

Correlation Value of the coefficient is always between -1 and +1. If the correlation coefficient value is positive, the two variables have a similar and same relationship. Otherwise, it shows how the two variables are different.

If the correlation coefficient (R) =  0.4

Coefficient of determination (R²) = (0.4)²

Coefficient of determination (R²) = 0.16

So that, the total variation in salary can be explained by gender is 16%.

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The equation of a circle that has a diameter that passes through the points (3,0) and (7,6) is x² + y² - 10*x  - 6*y +21 =0

Given that, the points (3,0) and (7,6)

(x1, y1) = (3,0) and (x2, y2) = (7,6)

We know that the formula for the equation of circle whose points of diameter are given is equal to :

(x - x1) * (x - x2) + (y - y1) * (y - y2)

So now,

(x - 3) * (x - 7) + (y - 0) * (y - 6) = x² + y² - 10*x  - 6*y +21 =0

so the equation of a circle that has a diameter that passes through the points (3,0) and (7,6) is x² + y² - 10*x  - 6*y +21 =0

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