F (x) = 3x+2 find f(-4)

Answer:

AB=x+3;

BC=2x;

AC=4x−5

AB+BC=AC

x+3+2x=4x−5

3x+3=4x−5

x=8.

Step-by-step explanation:

Answer:

\((\sqrt{x+3} )^{2} + 4^{2} = 5^{2}\)

x + 3 + 16 = 25

x + 19 = 25

x = 6

hope it helps.

Also, I think that Brainly is an awesome app, but there's an app which is doing great work for me in maths, named Gauthmath. I will suggest it. Video concepts and answers from real tutors.

To represent a 15 yard-gain in football, we can use the integer +15. This means that the team has moved forward 15 yards from their starting point. The meaning of zero in this situation would be that the team did not gain or lose any yards and stayed at their starting point.

Step-by-step explanation:
1. You start at 0 yards (the meaning of zero in this context).
2. You gain 15 yards, which is a positive value (+15).


In both cases, zero serves as the starting point from which gains or losses are measured using positive or negative integers.

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The lift ratio indicates a strong association between the two websites.

Association rule mining is a data mining technique used to find patterns in datasets. It is particularly useful for finding relationships between variables in large datasets. In this case, the dataset consists of browser histories, and we are interested in finding association rules between the websites that were visited.

The two main measures used in association rule mining are support and confidence. Support is the proportion of transactions that contain both the antecedent and the consequent of a rule, while confidence is the proportion of transactions containing the antecedent that also contain the consequent. Lift ratio is another measure used to evaluate the strength of an association rule. It is the ratio of the observed support to the expected support, assuming the antecedent and the consequent are independent.

To generate a list of association rules, we can use an algorithm like Apriori. The Apriori algorithm starts by finding frequent itemsets, or sets of items that occur together in a sufficient number of transactions. We can then use these frequent itemsets to generate association rules by dividing them into antecedents and consequents and calculating the support and confidence of each rule.

Based on the top 14 rules, we can identify the three web sites that appear in the association rules with the largest lift ratio. Lift ratio is a measure of how much more often the antecedent and consequent appear together than would be expected if they were independent. Therefore, high lift ratios indicate strong associations between the antecedent and consequent. We can sort the rules by lift ratio and identify the three web sites that appear in the rules with the highest lift ratios.

To identify the association rule with the largest lift ratio that also has a specific antecedent, we can filter the rules by the antecedent and sort them by lift ratio. We can then examine the consequent of the rule with the highest lift ratio.

The confidence of a rule indicates how often the consequent is observed in transactions containing the antecedent. In this case, the rule suggests that there is a high probability that customers who visit Pinterest also visit the consequent website. While the antecedent and consequent are not necessarily chronological, the rule suggests that there may be a relationship between the two websites that prompts customers to visit them together.

The lift ratio of a rule indicates the strength of the association between the antecedent and consequent. In this case, the rule suggests that customers who visit TheEveryGirl are much more likely to also visit the consequent website than would be expected if the two websites were independent. Therefore, the lift ratio indicates a strong association between the two websites.

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The rate of change of the volume is 1800 \(cm^3/s.\)

Since we now know that the volume of a cube is provided by the equation V = a, we can use this knowledge to obtain the equation connecting V and a cube edge.

where a stands for how long each edge is.

We obtain: dV/dt = 3 by taking the derivative of both sides with respect to time (t).

* da/dt

Given that the cube's edges are growing at a rate of 6 cm/s, we know that da/dt = 6 cm/s.

Substituting this value into the equation, we have:

dV/dt = \(3a^2 * 6\)

Simplifying further, we have:

dV/dt =\(18a^2\)

Now we need to find the rate of change of the volume when the length of each edge is 10 cm. Substituting a = 10 into the equation, we get:

dV/dt = 18 * \((10^2)\)

dV/dt = 18 * 100

dV/dt = 1800 \(cm^3/s\)

Therefore, the rate of change of the volume is 1800 \(cm^3/s.\)

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The value of the integral ∫√x/(x - 4) dx from 9 to 16 is 3.022

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

∫√x/(x - 4) dx from 9 to 16

The above expression can be integrated using integration by parts method

When integrated, we have

∫√x/(x - 4) dx = 2(√x - ln(√x + 2) + ln(|√x - 2|))

Recall that the x values are from 9 to 16

This means that

∫√x/(x - 4) dx = 2(√16 - ln(√16 + 2) + ln(|√16 - 2|)) - 2(√9 - ln(√9 + 2) + ln(|√9 - 2|))

So, we have

∫√x/(x - 4) dx = 2(4 - ln(4 + 2) + ln(|4 - 2|)) - 2(3 - ln(3 + 2) + ln(|3 - 2|))

Solving further, we get

∫√x/(x - 4) dx = 2(4 - ln(6) + ln(2)) - 2(3 - ln(5) + ln(1))

Evaluate

∫√x/(x - 4) dx = 3.022

Hence, the value of the integral is 3.022

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We have to find the value of x for the given equation e^(−x^)−e^x =3. Here we can use a small trick to get the solution. We know that e^-x is the reciprocal of e^x. So we can replace e^-x with 1/e^x. Now we have the equation e^(−x^)−e^x =3 in the form e^x - 1/e^x = 3.

This is a quadratic equation in the form ax^2 + bx + c = 0. Here a = 1, b = 0, c = -3. We can solve this quadratic equation to get the value of x.

Given equation is e^(−x^)−e^x =3.We can replace e^-x with 1/e^x.Now the equation is e^(x) - 1/e^(x) = 3.

Let's take e^x as a variable and solve the equation:e^x - 1/e^x = 3Multiplying both sides by e^x, we get e^x * e^x - 1 = 3e^xNow e^(2x) - 3e^x - 1 = 0.

This is a quadratic equation in the form ax^2 + bx + c = 0. Here a = 1, b = -3, c = -1.

We can solve this quadratic equation using the quadratic formula which is given as:x = [-b ± sqrt(b^2-4ac)]/2a.

Substituting the values, we get:x = [-(-3) ± sqrt((-3)^2-4(1)(-1))]/2(1)x = [3 ± sqrt(13)]/2Hence the value of x is x = [3 ± sqrt(13)]/2.

We can solve the given equation e^(−x^)−e^x =3 using a small trick. We know that e^-x is the reciprocal of e^x. So we can replace e^-x with 1/e^x. Now we have the equation e^(−x^)−e^x =3 in the form e^x - 1/e^x = 3. This is a quadratic equation in the form ax^2 + bx + c = 0.

Here a = 1, b = 0, c = -3. We can solve this quadratic equation to get the value of x.We have, e^x - 1/e^x = 3Multiplying both sides by e^x, we get e^x * e^x - 1 = 3e^xNow e^(2x) - 3e^x - 1 = 0This is a quadratic equation in the form ax^2 + bx + c = 0. Here a = 1, b = -3, c = -1.

We can solve this quadratic equation using the quadratic formula which is given as:x = [-b ± sqrt(b^2-4ac)]/2aSubstituting the values, we get:

\(x = [-(-3) ± sqrt((-3)^2-4(1)(-1))]/2(1)x = [3 ± sqrt(13)]/2So the value of x is x = [3 ± sqrt(13)]/2.\)

Hence the solution of the equation e^(−x^)−e^x =3 is x = [3 ± sqrt(13)]/2.

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Answer:

$76

Step-by-step explanation:

Hope it helps! If so can I get brainliest

Answer:

9 and 11

Step-by-step explanation:

Answer:

1   and 11

Step-by-step explanation:

Thanks for the points hope you'll understand

Answer:

y = x + 2

Step-by-step explanation:

As the equation of a line is in the form y = mx + c:

Step 1 - Calculate the y intercept

This can be done by looking at the y coordinate where x = 0:

y = mx + c

In the picture, the y intercept is 2 so:

y = mx + 2

Step 2 - Calculate the slope

This can be calculated by:

\(\frac{\text{change in y}}{\text{change in x}}\)

Get two sets of coordinates:

(0, 2) and (2, 4)

Calculate the changes by subtracting from one another:

\(\frac{4 - 2}{2 - 0} \\\frac{2}{2}\\=1\)

So the gradient is 1, meaning the equation of the line is:

\(y = 1x + 2 \\\text{or}\\y = x + 2\)

Hope this helps!

Answer:  Elaine is 135cm tall

Step-by-step explanation:

Elaine's height is 75% of her father's height.

We can calculate Elaine's height by multiplying her father's height by 75% or 0.75.

Elaine's height = 0.75 * 180 cm

                        = 135 cm

Therefore, Elaine is 135 cm tall.

The value of x =4,  y=6 using elimination method.

The elimination method involves taking one variable out of the system of linear equations by utilizing addition or subtraction together with multiplication or division of the variable coefficients.

Let   12x-7y=6 -------1  and

x-7y=-38 ---------2

To Eliminate y we subtract equation 1 and 2

 12x -7y = 6

 x    -7y = -38

-      +       +

--------------------

11x +0y =44

--------------------

Here y gets cancel and we get the equation as

  11x=44

⇒x=\(\frac{44}{11}\)

⇒x=4

Now substituting the value of x=4 in equation 1,we get

   12x-7y=6

⇒12(4)-7y=6

⇒48-7y=6

⇒48-6=7y

⇒7y=48-6

⇒7y=42

⇒y=42/7

⇒y=6

Therefore the value of x and y is 4 and 6 respectively.

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A bell-shaped histogram is a type of graph that displays a normal distribution, which is a probability distribution that is symmetrical and has a characteristic bell shape.

The bell-shaped histogram is created by plotting the data on a horizontal axis and the frequency or probability on a vertical axis. The data points are grouped into intervals called bins, and the number of data points that fall into each bin is plotted as a bar. The bars are typically drawn adjacent to one another and connected with lines to create a continuous curve that represents the normal distribution.

The resulting histogram will have a characteristic bell shape, with a high point at the mean, and decreasing frequency or probability as the values move away from the mean in either direction. The width of the curve is determined by the standard deviation of the data, with wider curves indicating greater variation in the data.

The bell-shaped histogram is commonly used in statistical analysis to represent normally distributed data, such as the heights or weights of a population, test scores, or other measurements that tend to cluster around a central value with a predictable range of variation.

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it might be 12

this is because there are6 pairs and 2 pairs

2×6=12

Answer:24

Step-by-step explanation: 6 times 2 = 12 times 2= 24

Answer:

Price per pound of apple=$0.84

Price per pound of cherry=$2.52

Step-by-step explanation:

Let apple=a

Let cherry =c

Fredrick

4a+14c=38.64. (1)

Wilhelmina

12a+7c=27.72. (2)

Multiply (1) by 1 and (2) by 2

4a+14c=38.64. (3)

24a+14c=55.44 (4)

Subtract (3) from (4)

20a= 16.8

a=16.8/20

a=0.84

Substitute a=0.84 into equ (1)

4a+14c=38.64

4(0.84)+14c=38.64

3.36+14c=38.64

14c=38.64-3.36

14c=35.28

c=35.28/14

c=2.52

Price per pound of apple=$0.84

Price per pound of cherry=$2.52

Check

4(0.84)+14(2.52)

3.36+35.28=38.64

12a+7c=27.72

12(0.84)+7(2.52)

=10.08+17.64

=27.72

Answer:

B) 2x - 5 = 2y + 14

Step-by-step explanation:

slope intercept form: y = mx + b

B) 2x - 5 = 2y + 14 is the only answer choice that does not isolate y, and place all other terms on the other side; therefore, is your answer.

~

Answer:

B

Step-by-step explanation:

slope intercept is a formula of y=mx+b all other answers proposed give a form of slope intercept, but with Choice B you have to do math to convert it to slope intercept.

A fraction that is sometimes used to approximate pi is 22/7.

One example of a fraction that is sometimes used to approximate pi is 22/7. This fraction is an approximation of pi that has been used for centuries, even though it is not an exact value of pi.

It is a good approximation that is accurate to within about 0.04%, which makes it useful in many practical applications.

The fraction 22/7 comes from dividing the circumference of a circle by its diameter, which is the definition of pi. While the exact value of pi is an irrational number that cannot be expressed as a fraction, 22/7 is a commonly used approximation that is easy to remember and calculate with. However,

there are more accurate approximations of pi that can be used for more precise calculations, such as 355/113 or 3.14159265359.

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The distance of both the planes from the starting point will be  1029 miles.

This is a question of time, speed and distance.

Given that:-

Speed of jet plane = 480 mph

Speed of propeller plane = 200 mph

Also, the propeller plane has a 3 hour head start.

We have to find the distance of both the planes from the starting point.

When the jet plane overtakes the propeller plane both of them would have covered the same distance.

Let the time taken by the jet plane to overtake the propeller plane be t hours.

Hence, the propeller plane would have travelled for (t+3) hours.

Hence, we can write,

480*t = 200*(t+3)

480t = 200t + 600

280t = 600

t = 600/280 = 15/7 hours.

Hence, distance from both the planes from the starting point = (15/7)*480 = 1028.57 miles = 1029 miles.

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Answer: 0.05

Step-by-step explanation: Ur welcome

Step-by-step explanation:

8×x+8×4=62.4.x=_

8x+32=62.4.x=_

8x=62.4-32

8x=30.4

x=30.4:8

x=3.8

The mean curvature H at a point p on a surface S is given by the equation 1/H = (1/π) ∫k₂(0) dθ, where k₂(0) represents the normal curvature at p along a direction making an angle θ with a fixed direction.

The mean curvature of a surface measures how the surface curves at a particular point. It is defined as the average of the principal curvatures, which represent the curvatures along the principal directions of the surface. To derive the formula, we consider a point p on the surface S and choose a fixed direction. We then consider a family of curves on the surface passing through p and parametrized by the angle θ they make with the fixed direction.

The normal curvature k₂(0) at p along each curve in this family can be computed. Integrating the normal curvature over the range of angles θ gives us the total contribution to the mean curvature. Dividing this by π (which represents the total range of angles) gives us the average, and taking the reciprocal gives us the formula 1/H = (1/π) ∫k₂(0) dθ, where H represents the mean curvature at point p on the surface S.

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we find that the numerical approximation using Euler's method gives y(2) ≈ 1.865, while the analytical solution gives y(2) = 2.5.

Using the formula y(n+1) = y(n) + Δx * f(x(n), y(n)), where f(x, y) = x² √y, we can calculate the values of y at each step. Here's the step-by-step calculation:

Step 1: For x = 0, y = 1 (initial condition).

Step 2: For x = 0.2, y = 1 + 0.2 * (0.2)² * √1 = 1.008.

Step 3: For x = 0.4, y = 1.008 + 0.2 * (0.4)² * √1.008 = 1.024.

Step 4: For x = 0.6, y = 1.024 + 0.2 * (0.6)² * √1.024 = 1.052.

Step 5: For x = 0.8, y = 1.052 + 0.2 * (0.8)² * √1.052 = 1.094.

Step 6: For x = 1.0, y = 1.094 + 0.2 * (1.0)² * √1.094 = 1.155.

Step 7: For x = 1.2, y = 1.155 + 0.2 * (1.2)² * √1.155 = 1.238.

Step 8: For x = 1.4, y = 1.238 + 0.2 * (1.4)² * √1.238 = 1.346.

Step 9: For x = 1.6, y = 1.346 + 0.2 * (1.6)² * √1.346 = 1.483.

Step 10: For x = 1.8, y = 1.483 + 0.2 * (1.8)² * √1.483 = 1.654.

Step 11: For x = 2.0, y = 1.654 + 0.2 * (2.0)² * √1.654 = 1.865.

Therefore, using Euler's method with a step size of Δx = 0.2, we approximate y(2) to be 1.865.

To obtain the analytical solution to the ODE, we can separate variables and integrate both sides:

∫(1/√y) dy = ∫x² dx

Integrating both sides gives:

2√y = (1/3)x³ + C

Solving for y:

y = (1/4)(x³ + C)²

Using the initial condition y(0) = 1, we can substitute x = 0 and y = 1 to find the value of C:

1 = (1/4)(0³ + C)²

1 = (1/4)C²

4 = C²

C = ±2

Since C can be either 2 or -2, the general solution to the ODE is:

y = (1/4)(x³ + 2)² or y = (1/4)(x³ - 2)²

Now, let's evaluate y(2) using the analytical solution:

y(2) = (1/4)(2³ + 2)² = (1/4)(8 + 2)² = (1/4)(10)² = 2.5

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Red-black trees are a type of self-balancing binary search tree, and while they are similar in structure and behavior to 2-3 trees, they are not an implementation of 2-3 trees.

2-3 trees and red-black trees are both self-balancing binary search trees, which means that they maintain their balance by automatically adjusting their structure after insertions and deletions. Both types of trees can be used to implement the same operations, such as searching, inserting, and deleting elements in logarithmic time.

However, 2-3 trees have a different structure and use a different balancing strategy than red-black trees. 2-3 trees are composed of nodes with either two or three children, whereas red-black trees are composed of nodes with two children and use color-coded links to balance the tree. While the two types of trees have some similarities, they are not the same thing, and red-black trees are not considered an implementation of 2-3 trees.

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--There is a slight error in the question, answering to the question below--

"Are red-black trees an implementation of 2-3 trees?"

The expected number of flips until the first time that your previous 2012 flips are HTHT is = 4096

According to the information given in the question,

Now to calculate the chances of getting HTHT for the first time will be,

E(x) = n × p

Where E(x) = the expected number of flips.

n = number of flips.

p = Probability of getting HTHT

Given,

n = 2012

p = ( \(\frac{1}{4096}\) )

E(x) = 4096

Therefore, the expected number of flips until the first time that your previous 2012 flips are HTHT is = 4096

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You are repeatedly flipping a fair coin. what is the expected number of flips until the first time that your previous 2012 flips are HTHT ...?you are repeatedly flipping a fair coin. what is the expected number of flips until the first time that your previous 2012 flips are HTHT ...?

Answer:

A,C, and D on edge

Step-by-step explanation:

trust me just took the test

Answer:

if you doing edg, the answer is a c and d

Step-by-step explanation:

Answer: True

Step-by-step explanation:

The slope is the rate of change, to find it, you can get rise/run or use the equation y2 - y1 / x2 - x1

So it is true!

Answer:

Y=12.5x+225

Step-by-step explanation:

CHECK THE COMPLETE QUESTION BELOW;

A particular rocket taking off from the earth surface uses fuel at a constant rate of 12.5 gallons per minute the rocket initially contains 225 gallons of fuel determine a linear model and Y equals X plus B form for the amount of fuel Y as a function of the number of minutes x at the rocket has burned

We were told to determine a linear model, where Y equals X plus B form for the amount of fuel Y as a function of the number of minutes x at the rocket has burned.

If we interpret this we have, Y=X+B , this equation can be compared to the standard equation of slope intercept of

Y= mx+b

Where the m is the slope, and b is the initial value at "y" intercept.

From the question, we were told that Y denotes a function of the number of minutes x at the rocket has burned

The given slope from the question, which is the rate= 12.5 gallons per minute

The given initial value =225 gallons of fuel which the value of "b"

If we substitute into the equation of the slope, we have;Y=12.5x+225 which is the required linear model .