Answer:
No, they are not equivalent ratios.
Step-by-step explanation:
The denominator of 14/25 is 25, which is 5 times 5.
If you multiply the numerator and denominator of 3/5 by 5, you get 15/25 which does not equal 14/25
Letf(x, y) = 2ex − y.Find the equation for the tangent plane to the graph of f at the point
The final equation for the tangent plane to the graph of f at the point (a, b) is z = 2e^a(x - a) - y + 2e^a - 2b. This equation represents the plane that is tangent to the graph of f at the specified point (a, b).
To find the equation for the tangent plane to the graph of the function f(x, y) = 2e^x - y at a given point (x0, y0), we need to calculate the partial derivatives of f with respect to x and y at that point.
The partial derivative of f with respect to x, denoted as ∂f/∂x or fₓ, represents the rate of change of f with respect to x while keeping y constant. Similarly, the partial derivative of f with respect to y, denoted as ∂f/∂y or fᵧ, represents the rate of change of f with respect to y while keeping x constant.
Let's calculate these partial derivatives:
fₓ = d/dx(2e^x - y) = 2e^x
fᵧ = d/dy(2e^x - y) = -1
Now, we have the partial derivatives evaluated at the point (x0, y0). Let's assume our point of interest is (a, b), where a = x0 and b = y0.
At the point (a, b), the equation for the tangent plane is given by:
z - f(a, b) = fₓ(a, b)(x - a) + fᵧ(a, b)(y - b)
Substituting fₓ(a, b) = 2e^a and fᵧ(a, b) = -1, we have:
z - f(a, b) = 2e^a(x - a) - (y - b)
Now, let's substitute f(a, b) = 2e^a - b:
z - (2e^a - b) = 2e^a(x - a) - (y - b)
Rearranging and simplifying:
z = 2e^a(x - a) - (y - b) + 2e^a - b
The final equation for the tangent plane to the graph of f at the point (a, b) is z = 2e^a(x - a) - y + 2e^a - 2b.
This equation represents the plane that is tangent to the graph of f at the specified point (a, b).
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a social worker is studying mental health statistics to better understand the clients they may work with. it is known that 5 percent of u.s. adults suffer from a mental illness. after studying this topic and looking at current trends, the social worker believes the percent of u.s. adults who suffer from a mental illness has decreased. what are the hypotheses? fill in the blanks with the correct symbol (
The null hypothesis would be H0: p = 0.05. The alternative hypothesis would be Ha: p < 0.05.
When forming hypotheses in this context, we typically state a null hypothesis (H0) and an alternative hypothesis (H1). Here's how you can fill in the blanks:
Null hypothesis (H0): The percentage of U.S. adults who suffer from a mental illness has not changed. H0: p = 0.05
Alternative hypothesis (H1): The percentage of U.S. adults who suffer from a mental illness has decreased. H1: p < 0.05
In this case, "p" represents the percentage of U.S. adults with a mental illness. The social worker will use statistical tests to analyze data and determine if there is enough evidence to reject the null hypothesis in favor of the alternative hypothesis.
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Solve the system of equation using substitution. Show all of your work.
y = 2x
y = -x + 9
Answer:
x = 3
y = 6
Step-by-step explanation:
2x = x + 9
x = 3
y = 2 * 3
y = 6 . Hope this help teehee :D
Mary raised some money.
She gave
of the money to a charity.
She gave
of
of the money to a housing project.
She gave the rest of the money to a first aid group.
What percentage of the money did the first aid group receive?
Answer:
The given information is incomplete as the percentage of money given to the charity and housing project is missing. Without knowing the percentage given to those two organizations, we cannot determine the percentage given to the first aid group.
Let's assume that Mary gave 30% of the money to the charity and 20% of the money to the housing project. Then, the percentage of money left for the first aid group would be:
100% - 30% - 20% = 50%
Therefore, the first aid group received 50% of the money. However, if the actual percentages given to the charity and housing project were different, the percentage given to the first aid group would also be different.
Step-by-step explanation:
Jeanette needed a large number of responses for her survey about taste preferences so she chose to do an internet survey. A significant problem she may have is _____
A significant problem is her sample will not be representative for her survey when she needed a large number of responses for her survey about taste preferences so she chose to do an internet survey.
what is internet survey ?
An Internet survey is a structured questionnaire that your target audience fills out over the internet, typically by filling out a form. The length and format of online surveys can vary. The data is saved in a database, and the survey tool usually includes some level of data analysis in addition to review by a trained expert.
Survey Advantages:
Unlike traditional surveys, internet surveys allow businesses to collect information from a large number of people at a low cost. When you conduct an internet survey, you will have the opportunity to learn:
Who are your customers?
What your users want to achieve?
What information are your users looking for?
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researcher records the following scores for an Olympic gymnast following her routine: 9.9, 9.8, 9.6, 9.5, 9.7, 9.1, 8.9, and 9.8. What is the range for the scores?
1.0 (9.9 to 8.9)
0.3 (9.8 to 9.5)
0.5 (9.6 to 9.1)
It is not possible to compute a range with an even number of scores.
The range for the scores is 1.0 (from 9.9 to 8.9). The range is the difference between the highest and lowest numbers in a set of numbers. In this case, the highest score is 9.9 and the lowest score is 8.9, so the range is 1.0.
In mathematics, the range of a function can refer to one of two similar terms:
the common area of the function
The image of the function
Given two groups X and Y, the binary relation f between X and Y is a (exact) function (X to Y), if there is a y in Y for every x in X, so f is associated with y. The sets X and Y are called the area of f and the common domain, respectively.
The range is a measure of dispersion in a set of numbers. To find the range, you need to subtract the lowest score from the highest score. In this case, the scores for the Olympic gymnast are: 9.9, 9.8, 9.6, 9.5, 9.7, 9.1, 8.9, and 9.8.
First, identify the highest and lowest scores:
Highest score: 9.9
Lowest score: 8.9
Next, subtract the lowest score from the highest score:
Range = 9.9 - 8.9
The range for the scores is 1.0 (9.9 to 8.9).
Your answer: 1.0 (9.9 to 8.9)
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Are these utility functions risk-averse on some given interval [a,b] ? a. f(x)=ln(x),g(x)=e^x, h(x)=−x^2
b. f(x)=−ln(x),g(x)=−e^−x, h(x)=−4x^2−10x
c. f(x)=ln(x), g(x)=−1/(e^2x), h(x)=−x^2 + 2000x
d. f(x)=ln(x),g(x)=1/(e^2x), h(x)=−x^2+10,000x
e. f(x)=ln(−2x), g(x)=−1e^2x, h(x)=x^2−100,000x
f. f(x)=ln(−2x),g(x)=−1e^2x, h(x)=x^2−100,000x
The utility functions in options a, b, c, and f are not risk-averse on the interval [a,b], while the utility functions in options d and e are risk-averse on the interval [a,b].
In economics and finance, risk aversion refers to a preference for less risky options over riskier ones. Utility functions are mathematical representations of an individual's preferences, and they help determine whether someone is risk-averse, risk-neutral, or risk-seeking. A risk-averse individual would have a concave utility function, indicating a decreasing marginal utility of wealth.
For options a, b, c, and f, the utility functions are and f(x) = -ln(x), g(x) = \(-e^(^-^x^)\), h(x) = \(-4x^2\) - 10x, respectively. These utility functions do not exhibit concavity, which means they are not risk-averse. Instead, they either show risk-seeking behavior (options a and b) or risk-neutrality (options c and f).
On the other hand, options d and e have utility functions f(x) = ln(x), g(x) = 1/(e^(2x)), h(x) = \(-x^2\) + 10,000x and f(x) = ln(-2x), g(x) = -1/(\(e^(^2^x^)\)), h(x) = \(x^2\) - 100,000x, respectively. These utility functions display concavity, indicating a decreasing marginal utility of wealth. Thus, options d and e can be considered risk-averse on the interval [a,b].
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How do you find the domain and range of a graph equation and table?
The domain of a graph is made up of all the input values displayed on the x-axis since the term "domain" refers to the set of potential input values. The y-axis on a graph indicates the available expected output, or range of graph.
In the given question, we have to explain how we can find the domain and range of a graph equation and table.
The domain and range are typically listed in a table's left and right columns, respectively. In a relation or function, the domain can alternatively be thought of as the input values (x), and the range as the output values (y).
Graphs can be used as another tool for determining the domain and range of functions. The domain of a graph is made up of all the input values displayed on the x-axis since the term "domain" refers to the set of potential input values. The y-axis on a graph indicates the available expected output, or range.
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DO NOT AWNSER IF YOU DO NOT KNOW
WILL GIVE BRAINLIEST, LIKE COMMENT AND 10 POINTS
A lemonade recipe calls for 1/4 cup of lemon juice for every cup of water. Use the table to answer these questions.
a. What does x represent?
b. What does y represent?
c. Is there a proportional relationship between x and y?
Suppose that the math team at your school competes in a regional tournament. The math team has 12 members regional teams are made up of 4 people how many different regional teams are possible
Answer:
3
Information:
Math Team has 12 members
Regional teams are made up of 4 members
Explanation:
If you think about it simply, all you have to do is divide
Your finding how much teams can be made out of 12 people with the requirement of 4 being in each.
12 / 4 = 3
If your having a hard time with dividing you can just use repeated subtraction. So just subtract 4 from 12 until it ends in 0, and then count how much times you subtracted!
what type of shape is this?
Evaluate the function below for x = 2.
F(x) = 2x³-x²-5x+6
OA. 56
OB. 16
OC. 4
O D. 8
Evaluating the function for x=2, F(x)= 8.
What is a linear equation?
Alternatively, a linear equation can be obtained by equating the linear polynomial over the field from which the coefficients are taken to zero.
The solution of such an equation is the value that makes the equation true when the unknowns are substituted.
If there is only one variable, there is only one solution. Often the term linear equation alludes to this special case where the variables are appropriately called unknowns.
With two variables, each solution can be interpreted as the Cartesian coordinates of a point on the Euclidean plane. The solutions of linear equations form lines in the Euclidean plane. Conversely, each line can be viewed as the set of all solutions to linear equations in two variables. This is the origin of the term linear for these types of equations. More generally, the solution of a linear equation in n variables forms a hyperplane (a subspace of dimension n − 1) in the Euclidean space of dimension n.
Therefore, Evaluating the function for x=2, F(x)= 8.
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2 () * - 9 V = 4 ปี 2 ก
A marksman at rest fires a 4.00 -kg gun that expels a bullet of mass 0.014 kg with a velocity of 181 m/s. the marksman’s mass is 81 kg. what is the marksman’s velocity after firing the gun?
The marksman's velocity after firing the gun is about -0.63 m/s (in the opposite direction of the bullet's velocity), as calculated using the conservation of momentum principle.
The conservation of momentum principle can be used to resolve this issue. The initial momentum of the system (marksman plus gun) is zero, and the final momentum is also zero because the bullet and the marksman have equal and opposite momenta. Therefore, we can write:
initial momentum = final momentum
\(0 = (M + m) * V + m * v\)
where M is the mass of the gun, m is the mass of the bullet, V is the velocity of the gun after firing, and v is the velocity of the bullet after firing (which is 181 m/s in this case).
Solving for V, we get:
\(V = - m * v / (M + m)\)
= \(\frac{- 0.014 kg * 181 m/s}{(4.00 kg + 0.014 kg)}\) ≈ -0.63 m/s
Therefore, the marksman's velocity after firing the gun is about -0.63 m/s (in the opposite direction of the bullet's velocity).
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The side lengths, in centimeters, of a triangle are 5x, 32, and 2(3x + 2). perimeter of the triangle is 80 centimeters. what is the length of the shortest side of the triangle
Answer:
20 cm
Step-by-step explanation:
5x + 32 + 6x + 4 = 80
11x + 36 = 80
11x = 44
x = 4
sides of triangle:
5(4) = 20 cm
32 cm
6(4) + 2 = 26 cm
HELPPP ASAP!!! WILL GIVE BRAINLYIST!!
Answer: The reflection is across x = 6.
Step-by-step explanation:
As you look at the reflection, you can see there is a shadowing with the two points on this graph. Point X1 is on (6, -1) and Point X is on (6, -7)
When looking at the graph, you can easily eliminate the x-axis and y-axis for an answer is because neither Point X1 nor Point X has a relationship to the axis.
Since the coordinates are precisely 6 units from each other, there is a reflection across x = 6.
Therefore, the reflection is across x = 6. Hope this helps!
-From a 5th Grade Honors Student
Yellowstone Middle School has 928 students. Teresa surveys a random sample of 24
students and finds that 6 are taking art. How many students at the school are likely to be
taking art?
Answer:
232 Students are Taking Art
Step-by-step explanation:
First, you multiply 6 times 928, which you should get 5,568. Then, divide that by 24, getting 232. I hope this helps :)
6. (20 points) Find the general solution to the differential equation: y" – 2y' – 2y = 12e-2x.
The general solution to the differential equation is y(x) = c1 × \(e^{(r1 * x)\) + c2 × \(e^{(r2 * x)\) + A × x × \(e^{(-2x)\)
To solve the given differential equation, let's proceed step by step.
Step 1: Characteristic Equation
The first step is to find the characteristic equation associated with the homogeneous part of the differential equation, which is obtained by setting the right-hand side (RHS) equal to zero. The characteristic equation is given by:
r² - 2r - 2 = 0
Step 2: Solve the Characteristic Equation
To solve the characteristic equation, we can use the quadratic formula:
r = (-b ± √(b² - 4ac)) / 2a
Plugging in the values from our characteristic equation, we have:
r = (-(-2) ± √((-2)² - 4(1)(-2))) / (2(1))
= (2 ± √(4 + 8)) / 2
= (2 ± √12) / 2
= (2 ± 2√3) / 2
Simplifying further, we get two distinct roots:
r1 = 1 + √3
r2 = 1 - √3
Step 3: Form the Homogeneous Solution
The homogeneous solution is given by:
\(y_h\)(x) = c1 × \(e^{(r1 * x)\) + c2 × \(e^{(r2 * x)\)
where c1 and c2 are constants to be determined.
Step 4: Particular Solution
To find a particular solution, we need to consider the RHS of the original differential equation. It is 12\(e^{(-2x)\), which is a product of a constant and an exponential function with the same base as the homogeneous solution. Therefore, we assume a particular solution of the form:
\(y_p\)(x) = A × x × \(e^{(-2x)\)
where A is a constant to be determined.
Step 5: Calculate the Derivatives
We need to calculate the first and second derivatives of \(y_p\)(x) to substitute them back into the original differential equation.
\(y_p\)'(x) = A × (1 - 2x) × \(e^{(-2x)\)
\(y_p\)''(x) = A × (4x - 3) × \(e^{(-2x)\)
Step 6: Substitute into the Differential Equation
Now, substitute \(y_p\)(x), \(y_p\)'(x), and \(y_p\)''(x) into the differential equation:
\(y_p\)''(x) - 2\(y_p\)'(x) - 2\(y_p\)(x) = 12\(e^{(-2x)\)
A × (4x - 3) × \(e^{(-2x)\)- 2A × (1 - 2x) × \(e^{(-2x)\) - 2A × x × \(e^{(-2x)\) = 12\(e^{(-2x)\)
Step 7: Simplify and Solve for A
Simplifying the equation, we have:
A × (4x - 3 - 2 + 4x) × \(e^{(-2x)\) = 12\(e^{(-2x)\)
A × (8x - 5) × \(e^{(-2x)\) = 12\(e^{(-2x)\)
Dividing both sides by \(e^{(-2x)\) (which is nonzero), we get:
A × (8x - 5) = 12
Solving for A, we find:
A = 12 / (8x - 5)
Step 8: General Solution
Now that we have the homogeneous solution (\(y_h\)(x)) and the particular solution (\(y_p\)(x)), we can write the general solution to the differential equation as:
y(x) = \(y_h\)(x) + \(y_p\)(x)
= c1 × \(e^{(r1 * x)\) + c2 × \(e^{(r2 * x)\) + A × x × \(e^{(-2x)\)
where r1 = 1 + √3, r2 = 1 - √3, and A = 12 / (8x - 5).
That's the general solution to the given differential equation.
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how do i solve 7x^{2} +11y^{2} =40
Answer:
Step-by-step explanation:
There is no solution as you have two variables and only one equation. The best you can do is solve for one variable as a function of the other.
\(7x^2+11y^2=40\\ \\ 11y^2=40-7x^2\\ \\ y^2=\frac{40-7x^2}{11}\\ \\ y=\sqrt{\frac{40-7x^2}{11}}\)
nancy goes fishing with Jason. they catch 14 trout if they equally split up trout how many will each one get
Answer:
They will each get 7 trout.
Step-by-step explanation:
Since there are two people (Nancy and Jason), take the 14 trout, and divide it amongst the two, so, they each get 7 fish.
every day, river goes into debt 2 1/2 river is currently 27.50 in debt for how many days river been losing money
River has been losing money for 11 days.
To find out how many days River has been losing money, we need to divide the total debt by the amount he goes into debt each day.
Given that River goes into debt 2 1/2 (or 2.5) every day and he is currently 27.50 in debt, we can set up the following equation:
2.5 * x = 27.50
where x represents the number of days River has been losing money.
To solve for x, we divide both sides of the equation by 2.5:
x = 27.50 / 2.5
x = 11
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The polynomial is a difference of perfect squares. Use the formula a2 – b2 = (a + b)(a – b) to factor completely.
81x2 – 49
The value of a is
.
The value of b is
.
The product of the prime factors is
.
Answer:
(9x+7)(9x-7)
value of a =9x
b = 7
What is the probability that either event will occur?
Now, find the probability of event A and event B.
A
B
6
6
20
20
P(A and B) = [?]
The probability of event A and event B is 6.
Given that, P(A)=6, P(B)=20 and P(A∩B)=6.
P(A/B) Formula is given as, P(A/B) = P(A∩B) / P(B), where, P(A) is probability of event A happening, P(B) is the probability of event B.
P(A/B) = P(A∩B) / P(B) = 6/20 = 3/10
We know that, P(A and B)=P(A/B)×P(B)
= 3/10 × 20
= 3×2
= 6
Therefore, the probability of event A and event B is 6.
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What is the area of this irregular figure?
A figure can be broken into 2 rectangles. One rectangle has a base of 16 centimeters and height of 8 centimeters. The other rectangle has a base of 8 centimeters and height of 8 centimeters.
128 Centimeters squared
192 Centimeters squared
256 Centimeters squared
512 Centimeters squared
Answer:
192cm²
Step-by-step explanation:
If you cut the shape into 2 and you do 8×8 which is 64cm²
Then you work out the area of the other part of the shape which is 8×16=128cm² then add them two together which is 192cm²
Answer:
here's the answer and proof in the image below
Step-by-step explanation:
5. Noah and his friends are going to an amusement park. The total cost of admission for 8
students is $100, and all students share the cost equally. Noah brought $13 for his
ticket. Did he bring enough money to get into the park? Explain your reasoning.
Answer:
yes
Step-by-step explanation:
he did because 100 divided by 8 is 12.5 and that would equal $12.50
So in all he would have 50 cents left
Answer:
yes,Noah did bring enough money for the ticket.
Step-by-step explanation:
you know that it's going to 8 students and in total it's 100.You need to know how much each will need to pay so you divide 100 divided by 8.The quotient/answer to what each student will pay is 12.5. 13 dollars is more than enough to pay for the ticket so Noah did bring enough.
Write tan 41π/36 in terms of the tangent of a positive acute angle.
tan(41π/36) can be written in terms of the tangent of a positive acute angle as (tan((1/9)π) + tan((37/36)π)) / (1 - tan((1/9)π)tan((37/36)π))
To express tan(41π/36) in terms of the tangent of a positive acute angle, we need to find an angle within the range of 0 to π/2 that has the same tangent value.
First, let's simplify 41π/36 to its equivalent angle within one full revolution (2π):
41π/36 = 40π/36 + π/36 = (10/9)π + (1/36)π
Now, we can rewrite the angle as:
tan(41π/36) = tan((10/9)π + (1/36)π)
Next, we'll use the tangent addition formula, which states that:
tan(A + B) = (tan(A) + tan(B)) / (1 - tan(A)tan(B))
In this case, A = (10/9)π and B = (1/36)π.
tan(41π/36) = tan((10/9)π + (1/36)π) = (tan((10/9)π) + tan((1/36)π)) / (1 - tan((10/9)π)tan((1/36)π))
Now, we need to find the tangent values of (10/9)π and (1/36)π. Since tangent has a periodicity of π, we can subtract or add multiples of π to get equivalent angles within the range of 0 to π/2.
For (10/9)π, we can subtract π to get an equivalent angle within the range:
(10/9)π - π = (1/9)π
Similarly, for (1/36)π, we can add π to get an equivalent angle:
(1/36)π + π = (37/36)π
Now, we can rewrite the expression as:
tan(41π/36) = (tan((1/9)π) + tan((37/36)π)) / (1 - tan((1/9)π)tan((37/36)π))
Since we are looking for an angle within the range of 0 to π/2, we can further simplify the expression as:
tan(41π/36) = (tan((1/9)π) + tan((37/36)π)) / (1 - tan((1/9)π)tan((37/36)π))
Therefore, tan(41π/36) can be written in terms of the tangent of a positive acute angle as the expression given above.
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find the amount and the compound interest on rupees 10000 for 2 years at 5% per annum compounded annually
Answer:
11025
Step-by-step explanation:
100+5÷100=1.05 squared
10000x1.05squared=11025
Answer:
Amount = 11205
CI = 1205
Step-by-step explanation:
\(a = p(1 + \frac{r}{n} ) {}^{nt} \)
Here,
p = 10000
r = 5% = 5/100 = 0.05
n = 1
t = 2
\(a = 10000(1 + \frac{0.05}{1} ) {}^{1 \times 2} \)
\(a = 10000(1.05) {}^{2} \)
\(a = 10000(1.1025)\)
\(a = 11205\)
C.I = a - p
C.I = 11205 - 10000
C.I = 1205
While at the beach in Caracas, Venezuela, I found 5 pearls and 5 diamonds, I was able to sell each pearl for $15 and each diamond for $18. Using the Distributive Law, calculate how much money I made.
Answer: 165
Step-by-step explanation:
5 X( 15+18) = 5 X 15 + 5 X 18 = 75 + 90 = 165.
Distributive law = a.(b + c) = a. b + a. c
the tread life of a particular brand of tire is a random variable best described by a normal distribution with a mean of 60,00 miles and a standard deviation of 2700 miles. what warranty should the company use if they want 96% of the tires to outlast the warranty?
According to the standard deviation, the company should offer a warranty period that covers at least 65,895 miles to ensure that 96% of the tires sold will outlast the warranty.
To do this, we use a z-score table, which gives the probability of getting a z-score less than or equal to a given value. The z-score is a measure of how many standard deviations a data point is from the mean.
To find the z-score for the top 4% of the tires, we first subtract 96% from 100% to get 4%. Then we divide this by 2 to get 2%, as we are interested in the area under the normal distribution curve in the right tail. Using the z-score table, we find that the z-score corresponding to a 2% area under the curve is approximately 2.05.
Next, we use the formula for converting a z-score to a data value:
z = (x - μ) / σ
where z is the z-score, x is the data value, μ is the mean, and σ is the standard deviation. Solving for x, we get:
x = z x σ + μ
Plugging in the values, we get:
x = 2.05 x 2700 + 60000
x ≈ 65,895
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The lengths of two sides of a triangle are given. Find the range of possible lengths for the third side.
6 ft, 6 ft
The range of the third side is < x < .
Answer:
0 < x < 12
Step-by-step explanation:
According to the triangle inequality theorem, the sum of the two sides must be greater than the length of the third side. 6+6 = 12
0 < x < 12