Using formula of quadratic equations, the nonreal roots of the original equation are -2 and 3.
What exactly are quadratic equations?
Quadratic equations are equations of the second degree. These equations are written in the form of ax² + bx + c = 0, where x is the unknown variable, and a, b, and c are constants (numbers).
Now,
If -2 and 4 are the real roots of the given equation, then (x + 2) and (x - 4) are factors of the equation. We can use polynomial division or synthetic division to divide the given polynomial by these factors, which will leave us with a quadratic equation whose roots are the nonreal roots of the original equation.
Using synthetic division, we have:
4 | 3 -6 3 -54 -216
| 12 -48 180 456
+---------------------
3 6 -45 126 240
So, the quadratic equation left after division is 3x² + 6x - 45 = 0.
Using the quadratic formula, we can find the roots of this equation:
x = (-6 ± √(6² - 4(3)(-45))) / (2(3))
x = (-6 ± 12) / 6
x = -2 or x = 3
Therefore, the nonreal roots of the original equation are -2 and 3.
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Name the property 8x/3 * 3/8x =1
Commutative property
commutative if changing the order of the operands does not change the result.
how to do this question plz answer me step by step plzz plz
Answer:
2 Pi
Step-by-step explanation:
Notice that the shape is made of:
● 1 square with a side of 1 meter length
● 4 half-circles wich means 2 cicles with a diameter lf 1 meter.
■■■■■■■■■■■■■■■■■■■■■■■■■■
The square is inside so it isn't necessary to calculate the perimeter.
The perimeter of a circle is:
P' = d × Pi
We have 4 half-squares wich means two circles
So the total perimeter is:
● P = 2×P'
● P = 2 × d × Pi
● P = 2 × 1 × Pi
● P = 2Pi
When a researcher sets alpha = .05, she is willing to accept a __ probability or less that she rejects the null hypothesis when It is actually true. Use the following Distributions tool to identify the boundaries that separate the extreme samples from the samples that are more obviously consistent with the null hypothesis. Assume the null hypothesis is nondirectional, meaning that the critical region is split across both tails of the distribution. The z-score boundaries at an alpha level alpha = .05 are: a. z = 196 and z = -1.96 b. z = 3.29 and z = -3.29 c. z = 2.58 and z = -2.58
The z-score boundaries at an alpha level alpha = .05 area) a. z = 196 and z = -1.96.
When a researcher sets alpha = .05, it means that she is willing to accept a maximum probability of 5% or less of rejecting the null hypothesis when it is actually true. This is known as the significance level or alpha level.
To identify the z-score boundaries that separate the extreme samples from the samples that are more obviously consistent with the null hypothesis, we use the standard normal distribution table or a calculator.
At an alpha level of .05, the z-score boundaries are at 1.96 on the positive side and -1.96 on the negative side of the distribution. This is because the critical region is split across both tails of the distribution. Therefore, the correct answer is a) a. z = 196 and z = -1.96.
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Explain the mathematical expression of the first law of thermodynamics for any state.Discuss the physical meaning of each term in an explicit form of it.Then,deduce the explicit form of energy balance equation for the following scenarios by drawing appropriate schematics.
The first law of thermodynamics, mathematically expressed as:
ΔU = Q - W
Where:
ΔU represents the change in internal energy of the system,
Q represents the heat added to the system, and
W represents the work done by the system.
The first law of thermodynamics, also known as the law of energy conservation, states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system.
The term "internal energy" (ΔU) refers to the total energy possessed by the system, including the kinetic and potential energy of its molecules. It is a measure of the system's thermal energy.
The term "heat" (Q) represents the transfer of energy between the system and its surroundings due to temperature difference. It is a form of energy transfer that occurs spontaneously from higher temperature regions to lower temperature regions.
The term "work" (W) represents the energy transfer resulting from forces applied to the system, causing displacement. It can take different forms, such as mechanical work, electrical work, or expansion work.
For different scenarios, the explicit form of the energy balance equation can be derived by considering the specific types of work and heat involved in the system. By drawing appropriate schematics, one can identify the relevant forms of work and heat transfer. Examples include:
Adiabatic Process: In this scenario, no heat transfer occurs (Q = 0). The energy balance equation simplifies to ΔU = -W, where the work done by the system contributes to the change in internal energy.
Isothermal Process: In this case, the temperature remains constant (ΔU = 0). The energy balance equation becomes Q = W, indicating that the heat added to the system is fully converted into work.
Isobaric Process: Here, the pressure remains constant. The energy balance equation can be written as ΔU = Q - PΔV, where P is the constant pressure and ΔV is the change in volume. This equation accounts for both heat transfer and work done against the constant pressure.
Therefore, by applying appropriate schematics and considering the specific conditions of a given scenario, one can deduce the explicit form of the energy balance equation and understand the interplay between heat, work, and the change in internal energy.
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Suppose $726.56 is deposited at the end of every six months into an account earning 6.45% compounded semi-annually. If the balance in the account four years after the last deposit is to be $31 300.00, how many deposits are needed? (This question asks for 'n')
We need approximately 10 deposits to reach a balance of $31,300 four years after the last deposit which is compounded semi-annually.
To solve this problem, we can use the formula for the future value of an annuity:
\(FV = P * ((1 + r)^n - 1) / r\)
Where:
FV is the future value of the annuity
P is the periodic payment or deposit amount
r is the interest rate per period
n is the number of periods
In this case, the deposit amount is $726.56, the interest rate is 6.45% compounded semi-annually, and the future value is $31,300. We need to find the number of deposits (n).
We can rearrange the formula and solve for n:
n = log((FV * r) / (P * r + FV)) / log(1 + r)
Substituting the given values:
n = log((31,300 * 0.03225) / (726.56 * 0.03225 + 31,300)) / log(1 + 0.03225)
Using a calculator or software, we find that n ≈ 9.989.
Therefore, we need approximately 10 deposits to reach a balance of $31,300 four years after the last deposit.
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Chocolates costing $8 per pound are to be mixed with chocolates costing $3 per pound to make a 20 pound mixture. If
the mixture is to sell for $5 per pound, how many pounds of each chocolate should be used?
Which of the following equations could be used to solve the problem?
8x+3x+5(20)
8x+ 3(20) = 5(x+20)
8X+ 3/20 - ) = 5(20)
Answer:
it should be 8x + 3(20 - x) = 5(20)
According to government data, the probability that an adult was never in a museum is 15%. In a random survey of 10 adults, what is the probability that at least eight were in a museum
The probability that at least eight out of ten adults in the random survey have been in a museum is approximately 0.905, or 90.5%.
The probability of at least eight adults out of a random survey of ten adults having been in a museum can be calculated using the binomial probability formula. Let's denote the probability that an adult was never in a museum as "p" (15%) and the probability that an adult has been in a museum as "q" (85%).
To find the probability of at least eight adults out of ten having been in a museum, we need to sum the probabilities of exactly eight, exactly nine, and exactly ten adults having visited a museum.
Let's calculate each probability individually and then add them together:
Probability of exactly eight adults (k = 8):
P(X = 8) = (10 choose 8) * (0.85^8) * (0.15^2)
Probability of exactly nine adults (k = 9):
P(X = 9) = (10 choose 9) * (0.85^9) * (0.15^1)
Probability of exactly ten adults (k = 10):
P(X = 10) = (10 choose 10) * (0.85^10) * (0.15^0)
To calculate these probabilities, we can use the binomial coefficient formula, which is (n choose k) = n! / (k! * (n - k)!). In this case, n is 10, and k varies from 8 to 10.
Calculating each probability:
P(X = 8) = (10 choose 8) * (0.85^8) * (0.15^2)
P(X = 9) = (10 choose 9) * (0.85^9) * (0.15^1)
P(X = 10) = (10 choose 10) * (0.85^10) * (0.15^0)
Once we have these values, we can add them together to obtain the probability of at least eight adults having been in a museum:
P(X ≥ 8) = P(X = 8) + P(X = 9) + P(X = 10)
Now, let's calculate these probabilities:
P(X = 8) = (10 choose 8) * (0.85^8) * (0.15^2) ≈ 0.3117
P(X = 9) = (10 choose 9) * (0.85^9) * (0.15^1) ≈ 0.3874
P(X = 10) = (10 choose 10) * (0.85^10) * (0.15^0) ≈ 0.2059
Finally, adding these probabilities together:
P(X ≥ 8) = 0.3117 + 0.3874 + 0.2059 ≈ 0.905
Therefore, the probability that at least eight out of ten adults in the random survey have been in a museum is approximately 0.905, or 90.5%.
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Find x and y.
-
55°
Someone please help me with this chart, I don’t understand it.
Answer:
The second one is (3 x 3 x 3 x 3) x (3 x 3)
Step-by-step explanation:
3. What is the perimeter of VPQR? Show your work. (Giving Brainliest)!
Answer:
13 (i think)
Step-by-step explanation:
Answer:
P = 17
Step-by-step explanation:
3y – 2 = y + 4
3y -2 (+2) = y + 4 (+2)
3y = y + 6
3y (-y) = y (-y) + 6
2y = 6
2y / 2 = 6 / 2
Y = 3
PR = 3y – 2
PR = 3(3) – 2
PR = 9 – 2
PR = 7
P of PQR = 4 + 6 + 7
P of PQR = 17
The corresponding angles of similar triangles are equal. always sometimes never
Answer: Always True
Step-by-step explanation:
A box contains 18 yellow, 24 green and 28 red jelly beans. If 12 jelly beans are selected at random, what is the probability that:
Yellow: 25.71% chance of you grabbing a yellow jelly bean
Green:34.29% chance of you grabbing a green jelly bean
Red: 40% chance of you grabbing a red jelly bean
The probability distribution for a
random variable x is given in the table.
-5
-3
-2.
0
2
3
Probability
.17
.13
.33
.16
.11
.10
Find the probability that -2
Answer:
x=-2
but it's sample space is 33 in the sequence
therefore
the p(a)=-2/33
If 3n + 2 = 14, what must 3n be equal to?
12
14
16
4
Answer:
4
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
Isolate n to solve the problem.
1. Subtract 2 from both sides to cancel out 2 on the left side of the equation.
3n = 12
2. Divide by 3 to get n by itself.
n=4
the cube root of 125 is 5. how much larger is the cube root of 126.2? estimate using the linear approximation.
The cube root of 126.2 is approximately 0.016 larger than the cube root of 125.
Linear approximation is a strategy for approximating the values of complicated functions. When a graph is relatively straight, this approximation is quite effective. A linear approximation for a function is a straight line that represents a close approximation of the original function.
The formula to be used is given by
df/dx = (f(x+dx)-f(x))/dx
The first derivative of the cube root of x can be computed as follows:
f(x) = x^(1/3)
df/dx = (1/3)*x^(-2/3)
Using this formula, we can calculate the linear approximation of the cube root of 126.2. This can be done as follows:
f(x + dx) ≈ f(x) + df/dx * dx
In the given case, the f(x) = ∛125 ⇒ 5
Let dx = 126.2 - 125 ⇒ 1.2
Then the linear approximation of the cube root of 126.2 is given by
f(126.2) ≈ f(125) + df/dx * dx
⇒ f(126.2) ≈ 5 + (1/3)*125^(-2/3) * 1.2
⇒ f(126.2) ≈ 5 + 0.016
⇒ f(126.2) ≈ 5.016
Therefore, the cube root of 126.2 is roughly 0.016 greater than the cube root of 125.
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An 8th-grade class washed cars and pets to raise money for a children’s hospital. They charged $10 to wash a car and $5 to wash a pet. They raised $1,600 in one week, washing a total of 201 cars and pets. How much more money was raised washing cars than pets?
$1,399
$1,190
$780
$410
Answer:
780
Step-by-step explanation:
the answer is 780
Answer: 780
Step-by-step explanation:
20 POINTS AND BRAINLIEST
What is the solution to the inequality shown?
-2(x + 3) < 6 - X
X > -12
x < -12
X > 12
x < 12
Answer: x > -12
Step-by-step explanation:
Fractional distance send help
A right angle triangle has an adjacent side of 8mm, and opposite side has 3mm. Find the angle using
SOHCAHTOA
A right-angle triangle has an adjacent side of 8mm, and the opposite side has 3mm. The angle opposite the adjacent side of 8mm is 20.56 degrees.
In SOHCAHTOA, which stands for Sin Opposite Hypotenuse Cos Adjacent Hypotenuse Tan Opposite Adjacent, there are three trigonometric ratios. These ratios are as follows:
Sine = Opposite / Hypotenuse
Cosine = Adjacent / Hypotenuse
Tangent = Opposite / Adjacent
We are given the adjacent side of the triangle, which is 8mm, and the opposite side of the triangle, which is 3mm. We have to determine the angle using SOHCAHTOA.
Let's look at each ratio separately to determine which one can be used:
Sine = Opposite / Hypotenuse
Cosine = Adjacent / Hypotenuse
Tangent = Opposite / Adjacent
Since we are given the adjacent side and we are looking for the angle that is opposite to the adjacent side, we need to use the tangent ratio. Using the formula, we have:
Tangent = Opposite / Adjacent
Tan A = Opposite / Adjacent = 3 / 8
Using a scientific calculator, the inverse tangent of 3/8 is 20.56 degrees.
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how do i get my w2 from walgreens if i no longer work there
Send your request via email on the company mail, include your name, employee ID number, and the W2 you are asking for the particular year.
For more than a century, Walgreens has operated on the same set of values: Honesty, Trust, and Integrity with Our Customers, Our Shareholders, Our Suppliers, The Communities We Serve, and Among Ourselves.
Quality via dependable and consistent advice, goods, and services at all points of contact and through all channels.
kind, sensitive, and motivated to provide excellent service and a positive patient and customer experience in order to achieve healthy outcomes.
via service, knowledge, and the personal engagement of each member of the Walgreen team, a strong commitment to and presence in the community.
All products under the Walgreens brand come with a 100% satisfaction guarantee! Return the unused amount if you're not entirely happy, and we'll refund the entire purchase price.
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A 11 m ladder is leaning against a wall. The foot of the ladder is 6 m from the wall. Find the angle that the ladder makes with the ground.
The angle the ladder makes with the ground is approximately 58.1 degrees.
We can utilize geometry to find the point that the stepping stool makes with the ground. We should call the point we need to find "theta" (θ).
In the first place, we can draw a right triangle with the stepping stool as the hypotenuse, the separation from the wall as the contiguous side, and the level the stepping stool comes to as the contrary side. Utilizing the Pythagorean hypothesis, we can track down the level of the stepping stool:
\(a^2 + b^2 = c^2\)
where an is the separation from the wall (6 m), b is the level the stepping stool ranges, and c is the length of the stepping stool (11 m). Improving the condition and settling for b, we get:
b = \(\sqrt (c^2 - a^2)\) = \(\sqrt(11^2 - 6^2)\) = 9.3 m
Presently, we can utilize the digression capability to track down the point theta:
tan(theta) = inverse/contiguous = b/a = 9.3/6
Taking the converse digression (arctan) of the two sides, we get:
theta = arctan(9.3/6) = 58.1 degrees (adjusted to one decimal spot)
Subsequently, the point that the stepping stool makes with the ground is around 58.1 degrees.
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Solve this equation for x: 3x - (5x - 9) - 7- 4(x + 1)
Step-by-step explanation:
this is your answer..........
For items 7-10, use the figure shown. Find the coordinates of the specified vertex after the given sequence of transformations.
Quadrilateral Q R S T plotted on a coordinate plane with vertices at, Q, (1, 3), R, (3, negative 3), S, (zero, negative 2), and T, (negative 2, 1).
a translation 2 units right, then a reflection across x = 0
Q' = ( , )
The coordinates of the specified vertex after the given sequence of transformations is given by;
Q' = (3, -3).
What is a translation?In Mathematics, the translation of a geometric figure to the right simply means adding a digit to the value on the x-coordinate (x-axis) of the pre-image of a function while a geometric figure that is translated up simply means adding a digit to the value on the y-coordinate (y-axis) of the pre-image or parent function.
Mathematically, a horizontal translation to the right is modeled by this mathematical expression g(x) = f(x + N) while a vertical translation to the positive y-direction (upward) is modeled by this mathematical expression g(x) = f(x) + N.
Where:
N represents an integer.g(x) and f(x) represent a function.By translating the coordinate Q (1, 3) two (2) units to the right, we have the following:
Coordinate Q (1, 3) → Coordinate Q' (1 + 2, 3) = Q (3, 3)
In Mathematics, a reflection across the x-axis would maintain the same x-coordinate while the sign of the y-coordinate would change from positive to negative. Therefore, a reflection over the x-axis is given by this transformation rule:
(x, y) → (x, -y)
Coordinate Q' (3, 3) → (3, -3).
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Make 'r' the subject of this formula: 3r - 5 = p
Answer:
hey I am not about what the question says but I think this is the answer:
3r=p+5
so the subject is 3r
4. Tina purchased 12 tickets to Junkanoo at a cost of $25.50 per
ticket. What is the total cost of all twelve tickets?
add speaker notes
Answer:
306 dollars
Step-by-step explanation:
Problem has 25.50 per which means you multiply by 25.50.
Each ticket cost 25.50 so,
12 x 25.50 is 306
Answer:
306
Step-by-step explanation:
Multiply 12 * 25.5 to get the total cost since each ticket is $25.5 and you have 12 tickets.
It costs mrs. richardson $13.67 to arrange a flower bouquet for a wedding. she charges the bride $35 for the arrangement. how much money does mrs. richardson profit from each arrangement?
Mrs. Richardson makes a profit of $21.33 from each flower arrangement for the wedding.
To calculate the profit, we subtract the cost from the selling price. Mrs. Richardson's cost for arranging the bouquet is $13.67, and she charges the bride $35 for the arrangement.
Profit = Selling Price - Cost
Profit = $35 - $13.67
Profit = $21.33
Therefore, Mrs. Richardson makes a profit of $21.33 from each flower arrangement for the wedding.
In this scenario, the profit is calculated by subtracting the cost of arranging the bouquet from the selling price. The cost incurred by Mrs. Richardson is $13.67, which includes the expenses for materials, labor, and any other associated costs. On the other hand, the selling price is $35, which is what the bride pays for the arrangement.
By subtracting the cost from the selling price, we find that the profit per arrangement is $21.33. This means that Mrs. Richardson earns $21.33 for each bouquet she arranges for a wedding, after covering her costs.
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Which problem situation can be represented by this inequality? 25 + 12.50c ≥ 22.50c − 95 A Charles and Victor went to a comic store and purchased some comic books. Charles purchased c comic books for $12.50 each and then spent $25.00 on a comic book portfolio. Victor sold a vintage comic book to the store for $95.00 and then purchased c more comic books for $22.50 each. How many comic books, c, would each boy purchase if Charles’ total amount due is greater than or equal to Victor’s total? B Charles and Victor went to a comic store and purchased some comic books. Charles purchased c comic books for $22.50 each and then spent $25.00 on a comic book portfolio. Victor sold a vintage comic book to the store for $95.00 and then purchased c more comic books for $12.50 each. How many comic books, c, would each boy purchase if Charles’ total amount due is greater than or equal to Victor’s total? C Charles and Victor went to a comic store and purchased some comic books. Charles purchased c comic books for $12.50 each and then spent $25.00 on a comic book portfolio. Victor purchased a vintage comic book from the store for $95.00 and then purchased c more comic books for $22.50 each. How many comic books, c, would each boy purchase if Charles’ total amount due is greater than or equal to Victor’s total? D Charles and Victor went to a comic store and purchased some comic books. Charles purchased c comic books for $22.50 each and then spent $25.00 on a comic book portfolio. Victor purchased a vintage comic book from the store for $95.00 and then purchased c more comic books for $12.50 each. How many comic books, c, would each boy purchase if Charles’ total amount due is greater than or equal to Victor’s total?
The problem situation that can be represented by this inequality is A. Charles and Victor went to a comic store and purchased some comic books. Charles purchased c comic books for $12.50 each and then spent $25.00 on a comic book portfolio. Victor sold a vintage comic book to the store for $95.00 and then purchased c more comic books for $22.50 each. How many comic books, c, would each boy purchase if Charles’ total amount due is greater than or equal to Victor’s total?
How to illustrate the information?It should be noted that an inequality is used to illustrate the expressions that are not equal.
In this case, it should be noted that the inequality given is illustrated as 25 + 12.50c ≥ 22.50c − 95.
Therefore, the information that illustrates this is that Charles and Victor went to a comic store and purchased some comic books. Charles purchased c comic books for $12.50 each and then spent $25.00 on a comic book portfolio. Victor sold a vintage comic book to the store for $95.00 and then purchased c more comic books for $22.50 each.
In conclusion, the correct option is A.
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x - y = 11 and 3x + 10y = -6 How would I solve by substitution?
Answer:
y = - 3, x = 8
Step-by-step explanation:
x - y = 11, x = 11 + y
Lets solve this equation with substitution: 3x + 10y = - 6
3(11+y)+10y=-6
33+3y+10y=-6
13y=-39
y = - 3
x - (-3) = 11
x + 3 = 11
x = 8
Answer:
use the first equation and solve for the variables
Step-by-step explanation:
for example, to solve for x add y on both sides x=11+y and substitute that to the equation
3(11+y)+10y=-6
that should give you -3
then go back to the equation x=11+y
x=11+(-3)
x=8
hope this helps!
If person A and person B have equal positive amounts of goods X and Y and person A values good X more than good Y, then:
if person B values good Y more than good X, there are mutually beneficial trades available.
If person A and person B have equal positive amounts of goods X and Y and person A values good X more than good Y and person B values good Y more than good X, there are mutually beneficial trades available.
Mutually beneficial trades are the kind of trades that benefit both parties in a trade agreement. A mutually beneficial trade occurs when two countries or individuals trade and both benefit from the transaction. In the case where person A and person B have equal positive amounts of goods X and Y and person A values good X more than good Y and person B values good Y more than good X, there are mutually beneficial trades available. This is because person A would be more willing to trade his good Y for Person B’s good X since person A values good X more than good Y and person B would be more willing to trade his good X for person A’s good Y since person B values good Y more than good X. In this way, both parties would benefit from the transaction because they would be trading the goods they value less for the ones they value more.
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Let S be a relation on the set R of all real numbers defined by S={(a,b)∈R×R:a 2 +b 2 =1}. Prove that S is not an equivalence relation on R.
The relation S={(a,b)∈R×R:a²+b²=1} is not an equivalence relation on the set of real numbers R.
To show that S is not an equivalence relation, we need to demonstrate that it fails to satisfy one or more of the properties of an equivalence relation: reflexivity, symmetry, and transitivity.
Reflexivity: For a relation to be reflexive, every element of the set should be related to itself. However, in the case of S, there are no real numbers (a, b) that satisfy the equation a² + b² = 1 for both a and b being the same number. Therefore, S is not reflexive.
Symmetry: For a relation to be symmetric, if (a, b) is related to (c, d), then (c, d) must also be related to (a, b). However, in S, if (a, b) satisfies a² + b² = 1, it does not necessarily mean that (b, a) also satisfies the equation. Thus, S is not symmetric.
Transitivity: For a relation to be transitive, if (a, b) is related to (c, d), and (c, d) is related to (e, f), then (a, b) must also be related to (e, f). However, in S, it is not true that if (a, b) and (c, d) satisfy a² + b² = 1 and c² + d² = 1 respectively, then (a, b) and (e, f) satisfy a² + b² = 1. Hence, S is not transitive.
Since S fails to satisfy the properties of reflexivity, symmetry, and transitivity, it is not an equivalence relation on the set of real numbers R.
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