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Answer:

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Step-by-step explanation:

The time interval when the object is speeding up is t > 2, and the time interval when the object is slowing down is 1 < t < 2.

Given that

S(t) = 2t³ - 3t² - 12t + 8

Differentiate to get the velocity function

v(t) = 6t² - 6t - 12

Differentiate to get the acceleration function

a(t) = 12t - 6

To determine the time intervals when the object is slowing down or speeding up, we need to examine the sign of the velocity and acceleration functions.

The object is speeding up when the velocity function is positive and the acceleration function is also positive.

This occurs when t > 2 (graphically)

Similarly, the object is slowing down at t < 2

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Answer:

To add these fractions, we need to find a common denominator. The least common multiple of 3, 5, and 6 is 30, so we can convert each fraction to an equivalent fraction with a denominator of 30:

7/3 = 70/30

21/5 = 126/30

7/6 = 35/30

Now we can add the fractions:

7/3 + 21/5 + 7/6 = 70/30 + 126/30 + 35/30

Combining the numerators, we get:

= (70 + 126 + 35) / 30

= 231 / 30

Simplifying this fraction by dividing the numerator and denominator by their greatest common factor, which is 3, we get:

= 77 / 10

Therefore, the sum of the fractions 7/3, 21/5, and 7/6 is equal to 77/10.

Therefore , the solution of the given problem of angles comes out to be the right response is option d 122°.

Using Cartesian coordinates, the top and bottom walls divide the circular lines that make up a skew's ends. There is a chance that two poles will meet at a junction point. Angle is another outcome of two things interacting. They mirror dihedral forms the most. A two-dimensional curve can be created by arranging two line beams in various ways at their extremities.

Here,

180 degrees is the length of a straight circle. It has been split into a 58-degree angle and an unidentified angle, as far as we are aware. So that we can determine the size of the undetermined angle, let's use subtraction:

=> Angle unknown = 180 degrees minus 58 degrees

=> Angle unknown = 122 degrees

As a result, the undetermined angle is 122° in size.

The right response is (d) 122°.

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One possible technique to address heteroscedasticity with group-specific variances is the use of weighted least squares (WLS) estimation, where observations from each group are assigned weights that are inversely proportional to the variance of the error term in that group.

Heteroscedasticity refers to the situation where the variance of the error term in a regression model is not constant across different levels of the independent variable(s). This violates the assumption of homoscedasticity, which can lead to biased and inefficient estimates of the model parameters.

When the heteroscedasticity is related to group-specific variances, a possible solution is to use WLS estimation. This involves calculating weights for each observation based on the inverse of the estimated variance of the error term in its group. By doing so, observations with larger variances are given smaller weights, while observations with smaller variances are given larger weights, which effectively downweighs the influence of more variable observations.

The resulting WLS estimator is more efficient and less biased than the standard OLS estimator, and it can lead to more accurate inferences about the relationship between the independent and dependent variables. However, WLS requires the researcher to specify the appropriate weights for each observation, which can be challenging and subjective in practice.

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The total amount of money shared between Rui Feng and Vishal is 154 dollars.

Let's assume that the amount of money shared between Rui Feng and Vishal is x dollars.

According to the given ratio, the amount of money received by Rui Feng is 5/14 of the total amount, and the amount received by Vishal is 9/14 of the total amount.

We are also given that Rui Feng receives 44 dollars less than Vishal. We can express this as:

9/14 x - 5/14 x = 44

Simplifying the equation, we get:

4/14 x = 44

Multiplying both sides by 14/4, we get:

x = 154

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The most conservative cutover method when converting to a new system is the Phased Cutover.

This method allows for the implementation of the new system in multiple stages, thereby reducing risk. First, the new system is installed and tested. Next, a small portion of data is moved to the new system.

After data is moved, the new system is tested again. This process is repeated until all data has been moved and tested, and the new system is running smoothly.

Once the new system is running successfully, the old system is discontinued.

The phased cutover method ensures that the new system is functioning correctly, and gives time for system users to get used to the new system, before the old system is turned off.

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The given data comprises of a right triangle in which the base is denoted by x whose value is found to be 10.01.

It states that the ratio of the length of the side opposite to the angle to the length of the hypotenuse is equal to the sine of the angle.

The given data comprises of a right triangle in which the base is denoted by x and the perpendicular is 8. The angle formed between the base and hypotenuse is 53 degree.

To solve this problem, we can use the trigonometric identity of sine.

Mathematically, it can be expressed as:

sin 53° = Perpendicular/Hypotenuse

8/x = sin 53°

x = 8/sin 53°

x = 8/ 0.7986

x ≈ 10.01

Hence, the value of x is 10.01.

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Answer:

-0.06666666666

hope it helps :)

As per the unitary method, Jackson needs 64 tablespoons of lemonade mix to make 4 quarts of lemonade. (option D).

First, we need to convert the 4 quarts of lemonade into ounces since we know the ratio in terms of ounces. One quart is equal to 32 ounces (8 oz per cup and 4 cups per quart). So, 4 quarts would be equal to 128 ounces (32 oz x 4).

Next, we need to determine how much lemonade mix is needed for every 6 ounces of water.

Therefore, the ratio of lemonade mix to water is 3 tablespoons/6 ounces.

Now that we have the ratio, we can use it to find out how much lemonade mix is needed for 128 ounces of water (4 quarts). We can set up a proportion using the ratio we just found:

3 tbsp / 6 oz = x tbsp / 128 oz

We want to solve for x, which represents the amount of lemonade mix needed for 128 ounces of water. To solve for x, we can cross-multiply and simplify:

3 tbsp x 128 oz = 6 oz x

384 tbsp oz = 6x

x = 64 tbsp

So the answer is D) 64 tbsp.

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Answer:

let X be the value of the total students

[tex] \frac{65}{100} \times x = 650 \\ \\ \frac{65x}{100 } = 650 \\ if \: w \:e \: crossmultipl \\ 65x = 65000 \\ x = 65000 \div 65 \\ x = 1000[/tex]

the range of the function is at least $400 plus $50 for each month after the purchase. The average monthly cost of owning the cell phone can be represented as:

C(t) = 400 + 50t

Where t is the number of months after the purchase.

Since C(t) is a linear function, its range is all real numbers greater than or equal to 400, since the initial cost of the phone is 400 and the monthly cost is a positive constant. Therefore, the range of C(t) is:

Range of C(t) = {C(t) | C(t) ≥ 400} or [400, ∞)

In other words, the range of the function is all possible average monthly costs of owning the phone, which is at least $400 plus $50 for each month after the purchase.

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Child is prescribed amoxicillin to be given 3 times per day. If she weighs 81 pounds, the maximum dose that she should receive is 500mg.

First, we need to convert the weight of the child from pounds to kilograms. We can do this by dividing the weight in pounds by 2.205 to get the weight in kilograms:

81 pounds÷2.205=36.74 kg

Next, we can calculate the maximum dose of amoxicillin that the child should receive per day by multiplying her weight in kilograms by 40 mg/kg:

36.74 kg×40 mg/kg=1469.6 mg

Since the maximum dose should not exceed 1500 mg per 24 hour period, the child should receive no more than 1500 mg of amoxicillin per day.

Finally, we need to divide the maximum daily dose by 3 to determine the maximum dose per individual dose, since the medication is prescribed to be given 3 times per day:

1500 mg÷3=500 mg

Therefore, the maximum dose of amoxicillin that the child should receive per individual dose is 500 mg.

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Answer:

82 ft^2

Step-by-step explanation:

To find the amount of glass needed to cover the entire rectangular pyramid, we need to calculate the combined surface area of all its faces.

The rectangular base of the pyramid has an area of 5 feet by 4 feet, or 20 square feet. The two large triangular faces each have an area of (1/2) x base x height = (1/2) x 5 feet x 6.8 feet = 17 ft^2. The two small triangular faces each have an area of (1/2) x base x height = (1/2) x 4 feet x 7 feet = 14 ft^2.

Therefore, the total surface area of the pyramid is:

20 ft^2 (for the base) + 17 ft^2 + 17 ft^2 + 14 ft^2 + 14 ft^2 = 82 ft^2

So, the amount of glass needed to cover the entire pyramid is 82 square feet.

Therefore, the answer is 82 ft^2.

Answer:82  ft2

Step-by-step explanation:

i did it in class

Micah received 1/2 of Savi's share and Juan got the balance.

"A method to find a single unit value from a multiple unit value and to find a multiple unit value from a single unit value."

We always count the unit or amount value first and then calculate the more or less amount value.

For this reason, this procedure is called a unified procedure.

Many set values ​​are found by multiplying the set value by the number of sets.

A set value is obtained by dividing many set values ​​by the number of sets.

According to our question-

total amount = $280=x

savi= 4*juan= 11

micah= 1/2 savi= 1/2*280/100= 1.4

juan got balance= 267.6

Hence, Micah received 1/2 of Savi's share and Juan got the balance.

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Therefore, the distance between the two points is simply the difference in their x-coordinates, this makes sense since both points lie on the same horizontal line, and so the vertical distance between them is zero.

Distance is a numerical measurement of how far apart two objects or points are from each other. It is a scalar quantity that is usually expressed in units of length, such as meters, kilometers, miles, or feet. Distance is often used in physics, mathematics, and engineering to describe the spatial separation between two objects or points. It is also used in everyday language to describe how far away something is, such as the distance between two cities or the distance from a person's house to their workplace.

By the question.

The distance between two points on a coordinate plane can be found using the distance formula:

distance =[tex]\sqrt{(x_{2}-x_{1})^{2}+ (y_{2}-x_{1}^{2} ) }[/tex]

In this case, the two points are (0, b) and (a, b). We can substitute these values into the distance formula:

distance = [tex]\sqrt{(a-0)^{2}+(b-b)^{2} }[/tex]

distance = [tex]\sqrt{a^{2}+0 }[/tex]

distance = a

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By function, The fact that this number is 1/2 indicates the half-life of the substance is 1 year.

How would you define a function in plain English?

A function is described as a relationship between a set of inputs and one output for every one of them. Simply described, a function is an association of inputs where each input is coupled to a single, distinct output.

                             Every function has an associated domain, codomain, or range. A mathematical function is a rule that, given the values of one or more independent variables and the dependent variable, determines the value of the dependent variable.

300 represents the initial amount of the substance, the amount present at t=0.

0.5 is the fraction of substance remaining at the end of each year. The fact that this number is 1/2 indicates the half-life of the substance is 1 year.

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Answer:

An easy way to finish this problem even if you don't know the correct mathematical approach would be to plug in each ordered pair into both equations and see whether they are true/false. You can even graph both lines and see where the intersect (the solution).

I got (-7,23), which appears to not be one of the available answer choices. Try using the graphing calculator in desmos.

Sofia's favorite bag of chips were on sale for $5 for two bags. If she wanted to buy seven bags, the cost would be $17.50.

To calculate this, we need to use the formula for finding the total cost of a given number of items: Total Cost = Number of Items x Cost Per Item.In this case, we need to find the total cost of seven bags, so the equation looks like this: Total Cost = 7 x $5.

We can solve this equation by multiplying the two numbers together. 7 multiplied by 5 equals 35. However, the question is asking us to find the total cost of seven bags, which is $17.50. To convert the answer from 35 to 17.50, we need to divide 35 by two: 35 divided by 2 equals 17.50.

Therefore, the cost of seven bags of Sofia's favorite chips would be $17.50.

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Larger the value of r² (R²) imply that the observations are more closely grouped about the least squares line (regression line) option C.

The dependent variables on the y-axis and the independent variables on the x-axis are shown as a linear connection by a regression line. By examining the data pattern the variables' effects have created, the correlation is established.

As the (R2) is large therefore, the model is a good fit or bounded close to  regression line least squares line (regression line).

In a regression graph, the regression line that is closest to the data points is shown. By changing the value of x in the regression equation, this statistical tool helps study how a dependant variable y behaves when the independent variable x changes.

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Complete question:

Larger values of r2 (R2) imply that the observations are more closely grouped about the

Group of answer choices:

Reason:

a+b = 15+24 = 39 is NOT larger than c = 39

Since a+b > c is false, a triangle is NOT possible.

The sum of any two sides must exceed the third side for a triangle to be possible. For more information, check out the triangle inequality theorem.

Scale Factor is equal to [tex]\frac{2}{3}[/tex]. Length of EH is equal to 16 units and length of AB is equal to 9.

4. A scale factor is the ratio of the scales of an original object and a new object.

Scale factor = Ordinated dimension / original dimension

Scale factor = [tex]\frac{10}{15}[/tex]

Scale factor = [tex]\frac{2}{3}[/tex]  (or) 0.67

5. Length of EH

Scale factor = [tex]\frac{EH}{AD}[/tex]

[tex]\frac{EH}{AD}[/tex] = [tex]\frac{2}{3}[/tex]

[tex]\frac{EH}{24} = \frac{2}{3}[/tex]

EH = 2 * 8

EH = 16 units

6. Length of AB

Scale factor = [tex]\frac{EF}{AB}[/tex]

[tex]\frac{EF}{AB}[/tex] = [tex]\frac{2}{3}[/tex]

[tex]\frac{6}{AB} = \frac{2}{3}[/tex]

AB = 3 * 3

AB = 9 units.

Therefore, Scale Factor is equal to [tex]\frac{2}{3}[/tex]. Length of EH is equal to 16 units and length of AB is equal to 9.

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In the following question, A linear system is ill-conditioned if its solution is highly sensitive to small changes in the problem data is said to be True.

What is a linear system? In mathematics, a linear system refers to a system of linear equations that can be expressed in matrix form as Ax = b. A is a matrix, x is a vector, and b is a constant vector. When working with linear systems, we must keep track of the numerical accuracy of the computations. When a small change in the matrix or constant vector produces a large change in the solution, the matrix is said to be ill-conditioned.

The mathematical concept of condition numbers measures the sensitivity of a matrix to changes in the problem data. If a matrix has a high condition number, it is said to be ill-conditioned, whereas if it has a low condition number, it is said to be well-conditioned. An ill-conditioned matrix is difficult to solve numerically because a small error in the input data can produce a large error in the computed solution.

Therefore, the statement that "a linear system is ill-conditioned if its solution is highly sensitive to small changes in the problem data" is correct, and it is true.

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Answer:

7cm to square centimeters is  2.6458 centimeters

Step-by-step explanation:

The probability of the human Grandmaster winning one out of three games against the AI is approximately 0.243 or 24.3%.

Let's denote the probability of the human Grandmaster winning one game as p. Then the probability of the AI winning one game is 0.9, which means the probability of the human winning one game is 0.1. Since we want to calculate the probability of the human winning one game out of three, we can use the binomial distribution formula:

[tex]P(X=k) = (^n _k) \times p^k \times (1-p)^{(n-k)}[/tex]

Where:

P(X=k) is the probability of getting k successes in n trials

(n choose k) is the binomial coefficient, which is the number of ways to choose k successes from n trials

p is the probability of success in one trial

(1-p) is the probability of failure in one trial

k is the number of successes we are interested in (in this case, k=1)

n is the total number of trials (in this case, n=3)

Plugging in the values, we get:

P(X=1) = (3 choose 1) * 0.1^1 * 0.9^(3-1) = 3 * 0.1 * 0.81 = 0.243 or 24.3%

This means that there is a decent chance for the human to win at least one game, but it is still more likely for the AI to win all three games.

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Answer:

(x+6)(x+6)

[tex]x^2+12x+36[/tex]

(x+8)(x-5)

[tex]x^{2}+3x-40\\[/tex]

(x-5)(x-2)

[tex]x^{2}-7x+10[/tex]

Step-by-step explanation:

Brainliest pls hope it helped^^

Answer:

a) x^(2)+12x+36

b) x^(2)+3x-40

c) x^(2)-7x+10

Step-by-step explanation:

Answer:     The function that represents the number of vans needed for the trip is:

v(n) = ceil((n+c) / 12)

where ceil(x) is the smallest integer greater than or equal to x, n is the number of track team members, c is the number of coaches, and 12 is the number of passengers that can be seated in each van.

We need to add the number of coaches to the number of team members since they will all be traveling together. The result of the division should be rounded up to ensure that there are enough vans for everyone, even if there are only a few extra passengers.

Note: This assumes that all passengers will be traveling together in the same vans. If the coaches or some of the team members will be driving separately, the function may need to be adjusted accordingly.

Step-by-step explanation:

Answer: y = -3x + 7

Step-by-step explanation:

slope = -3

y intercept = 7

To show that $n$ infinitely long straight lines, arranged on a plane in such a way that no two lines are parallel and no three lines intersect at a single point, divide the plane into $\frac{n^2 + n}{2}$ regions, follow these steps:

Solution:

1. Start with one straight line on the plane. This line divides the plane into two regions.
2. Add a second straight line that is not parallel to the first line and doesn't intersect at the same point. This second line will divide each of the two existing regions in half, creating two additional regions, for a total of four regions.
3. Now, add a third straight line that is not parallel to any of the existing lines and doesn't intersect at the same point as any other two lines. This line will intersect the two previous lines and divide each of the four existing regions in half, creating three additional regions for a total of seven regions.
4. Notice a pattern: with each new straight line added, the number of new regions it creates is equal to the line's order (i.e., the 1st line creates 1 new region, the 2nd line creates 2 new regions, the 3rd line creates 3 new regions, and so on).
5. To find the total number of regions for $n$ straight lines, sum the number of new regions created by each line. This is a simple arithmetic progression, so you can use the formula for the sum of an arithmetic series:

  $$\frac{n(n+1)}{2}$$

6. Thus, when $n$ infinitely long straight lines lie on a plane in such a way that no two of the lines are parallel and no three of the lines intersect at a single point, the arrangement divides the plane into $\frac{n^2 + n}{2}$ regions.

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Answer: 30 album pages

Step-by-step explanation:

cards = 10

teams = 24

total cards = 240

240 / 8 = 30