Answer:
The red is 1/3 and yellow is 1/4
Step-by-step explanation:
there are 3 colors and 1 of them is red so 1/3 same goes to the yellow 4 colors and is 1 yellow so 1/4
Construct a polynomial function with the stated properties. Reduce all fractions to lowest terms. Second-degree, with zeros of -5 and 1 , arid goes to −[infinity] is f→−[infinity]
The polynomial function with the stated properties is:\(f(x) = -x^2 - 4x + 5\)
To construct a second-degree polynomial function with zeros of -5 and 1, and goes to -∞ as f→-∞, follow these steps:
1. Identify the zeros: -5 and 1
2. Write the factors associated with the zeros: (x + 5) and (x - 1)
3. Multiply the factors to get the polynomial: (x + 5)(x - 1)
4. Expand the polynomial: x^2 + 4x - 5
Since the polynomial goes to -∞ as f→-∞, we need to make sure the leading coefficient is negative. Our current polynomial has a leading coefficient of 1, so we need to multiply the entire polynomial by -1:
\(-1(x^2 + 4x - 5) = -x^2 - 4x + 5\)
The polynomial function with the stated properties is:
\(f(x) = -x^2 - 4x + 5\)
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HELP PLSSSS WILL MARK BRAINLIEST
C personalities are organized and controlled. They take their time completing tasks accurately, like to research things thoroughly, and are always prepared. Because they put so much time and effort into everything they do, they hate to be criticized. They are perfectionists at heart and take even the smallest complaint personally. This makes them extremely difficult to confront. The best way to approach it is to focus on parts of the problem largely out of the C personality’s control or aspects of the problem they might not have considered. Make it clear that you appreciate all of their efforts and that you’re bringing something to their attention because it’s a variable that they need to have in the equation in the future. No matter what, don’t frame the conflict as a personal attack. If you do, the C personality will likely become resentful and go out of their way to avoid future interactions with you.%%%%%%%%%%%%%%%
What is the slope of the line that is parallel to the line whose equation is 4x + y2 = 0?
We know the slope formula
m=-a/bm=-4/2m=-2Parallel lines have equal slope so it has m=-2
Mikki used 18 tea bags to make 4 quarts of
iced tea. How many tea bags did Mikki use for
each quart of iced tea?
Answer:
\( \frac{18}{4} \)
Step-by-step
4.5
find the formula of the series:1³+2³+3³+...+n³
Step-by-step explanation:
(x+1)^4=x^4+4x^3+6x^2+4x+1
(X+1)^4–x^4=4x^3+6x^2+4x+1
If x=1>>2^4–1^4=4*1^3+6*1^2+4*1+1
x=2>>3^4–2^4=4*2^3+6*2^2+4*2+1
x=3>>4^4–3^4=4*3^3+6*3^2+6*3+1
.
.
X=n>>(n+1)^4-n^4=4n^3+6n^2+4n+1
X=n-1>>n^4-(n-1)^4=4(n-1)^3+6(n-1)^2+4(n-1)+1
Now we add them together
(n+1)^4–1=4(1^3+2^3+3^3+…+n^3)+6(1^2+2^2+3^2+…+n^2)+4(1+2+3+…+n)+(1+1++1+…+n)
(n+1)^4–1=4s(n)+6{n(n+1)(2n+1)/6}+4{n(n+1)/2}+n . So we could multiply this equation by 6
6(n^4+4n^3+6n^2+4n)=24s(n)+6(2n^3+3n^2+n)+12((n^2+n)+6n
24s(n)=6n^4+24n^3+36n^2+24n-12n^3–18n^2–6n-12n^2–12n-6n
24s(n)=6n^4+12n^3+6n^2
S(n)=(n^4+2n^2+1)/4
answer
(n(n+1)/2)^2
Answer:
(n²(n+1)²)/4
Step-by-step explanation:
1³ = 1
1³ + 2³ = 9
1³ + 2³ + 3³ = 36
1³ + 2³ + 3³ + 4³ = 100
Every answer is a perfect square:
1² = 1
3² = 9
6² = 36
10² = 100
Every number to be squared has a similarity:
(1)² = 1² = 1
(1 + 2)² = 3² = 9
(1 + 2 + 3)² = 6² = 36
(1 + 2 + 3 + 4)² = 10² = 100
Therefore we only need to find the formula for 1 + 2 + 3 + ... + n, and square that formula.
For the new series we have:
1 = 1
1 + 2 = 3
1 + 2 + 3 = 6
1 + 2 + 3 + 4 = 10
Let S be the sum of the new series:
S = 1 + 2 + 3 + ... + (n - 1) + n
S can also be re-written as:
S = n + (n - 1) + (n - 2) ... + 2 + 1
Adding the two sums of the series we have:
2S = (n + 1) + (n + 1) + (n + 1) + ... + (n + 1) = n(n + 1)
S = n(n + 1)/2
Now we only need to square this formula to get the formula for the original series:
[n(n + 1)/2]²
Applying Laws of Indices we have:
(n²(n + 1)²)/4
Hope this helps!
A dog won a race at the local fair by running 5 1/4 miles exactly 2 hours . At this constant rate , how long does it take it to run the same dog to run 6 3/10 mile at the state fair?
Answer:
2.4 hours
Step-by-step explanation:
6 3/10 divided by 5 1/4 is 1.2. So 6 3/10 is 1.2 times more than 5 1/4. We then take the 1.2 and multiply it by 2 hours because we need to find what's 1.2 times more than 2 hours. So then you get 2.4 hours.
Given the system of equations below. Use the Inverse of the matrix method to solve. x+2y+3z=11
2x+4y+5z=21
3x+5y+6z=27
The solution of the given system of equations is x = -4, y = 5 and z = 2 is the answer.
The system of equations given below:x + 2y + 3z = 11;2x + 4y + 5z = 21;3x + 5y + 6z = 27.
Here, we will solve this system of equations using inverse of the matrix method as follows:
We can write the given system of equations in matrix form as AX = B where, A = [1 2 3; 2 4 5; 3 5 6], X = [x; y; z] and B = [11; 21; 27].
The inverse of matrix A is given by the formula: A-1 = (1/ det(A)) [d11 d12 d13; d21 d22 d23; d31 d32 d33] where,
d11 = A22A33 – A23A32 = (4 × 6) – (5 × 5) = -1,
d12 = -(A21A33 – A23A31) = -[ (2 × 6) – (5 × 3)] = 3,
d13 = A21A32 – A22A31 = (2 × 5) – (4 × 3) = -2,
d21 = -(A12A33 – A13A32) = -[(2 × 6) – (5 × 3)] = 3,
d22 = A11A33 – A13A31 = (1 × 6) – (3 × 3) = 0,
d23 = -(A11A32 – A12A31) = -[(1 × 5) – (2 × 3)] = 1,
d31 = A12A23 – A13A22 = (2 × 5) – (3 × 4) = -2,
d32 = -(A11A23 – A13A21) = -[(1 × 5) – (3 × 3)] = 4,
d33 = A11A22 – A12A21 = (1 × 4) – (2 × 2) = 0.
We have A-1 = (-1/1) [0 3 -2; 3 0 1; -2 1 0] = [0 -3 2; -3 0 -1; 2 -1 0]
Now, X = A-1 B = [0 -3 2; -3 0 -1; 2 -1 0] [11; 21; 27] = [-4; 5; 2]
Therefore, the solution of the given system of equations is x = -4, y = 5 and z = 2.
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The graph below is a portion of the complete graph. On a separate sheet of paper sketch the complete graph assuming it is symmetric with respect to the x-axis. Then list 3 points from the new part of the graph that you sketched.
Answer:
(-1, -3), (-2, -5), (-5, -8),(-8, -5), (-9, -3)
Step-by-step explanation:
These are the options of points to pic from. :)
have a good day.
Pleasee help me with THISS thankksssd
Answer:
RP/QR = OP/NO
Step-by-step explanation:
RP corresponds to OP, QR corresponds to NO. So, RP/QR = OP/ON
2x-2y+z=3 5y-z=-31 x+3y+2z=-21
Answer:
Step-by-step explanation:
{x,y,z}={−5,−6,1}
write the relation between degree measure and grade measure of an angle
Answer:
To verify the relation between the degree measure and the radian measure of an angle
To obtain a relationship between degrees and radians, we can compare the number of degrees in one complete rotation and the number of radians in one complete rotation. The number of degrees in one complete rotation is equal to 360 degrees.
Step-by-step explanation:
Hope it helps! Correct me if I am wrong :>
Please help!!!
if 7^9/7^n = 7^3 then n is ___?
Answer:
n= 6
Step-by-step explanation:
7^9/7^6 is the same as 7^9 - 7^6/ 7^9-6 but it gives you 7^3
Find the solution to the following system by substitution.
4x + y = 40
y = 4x
OA. (0,40)
OB. (5,20)
O C. (10,40)
D. (10,0)
How many solutions does the equation have?
-4x - 9 = 12 - 4x
Answer:
No Solution
Step-by-step explanation:
-4x - 9 = 12 - 4x
You add 4x on both sides
-9 ≠ 12
No Solution
18. [0/1 Points]
Evaluate the variable expression xyz for the given values of x, y, and z.
X = - 5/8
y = - 2/5
Z= - 4/9
The value of the variable expression is -1/9.
According to the statement
we have to find the value of the given variable expression.
So, For this purpose, we know that the
A variable expression (or) an algebraic expression is a combination of terms by the operations such as addition, subtraction, multiplication, division, etc.
According to the given information:
The variable expression is xyz
And the values of the X = - 5/8, y = - 2/5, Z= - 4/9.
The expression is xyz
Put the values in it then(- 5/8)(- 2/5)(- 4/9)
then the value become is -1/9.
The value of the expression becomes -1/9.
So, The value of the variable expression is -1/9.
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!!PLEASE HELP ME QUICKLY!!
Which of the following could be the ratio between the lengths of the two legs of a 30-60-90 triangle?
[Please Check And Tell All That Apply]
A. 1 : /3
B. 3 : 3/3
C. /2 : /3
D. /2 : /2
E. 1 : /2
F. /3 : 3
Thank you!!!
Answer:
c
options A and B
Step-by-step explanation:
the ratio between the lengths of the two legs of a 30-60-90 triangle
General ration of 30-6- 90 degrees triangle is
x : xsqrt(3) : 2x
When x=1 the ratio becomes 1 : 1 sqrt(3)
when x= 2sqrt(3) the ratio becomes
It becomes
Two sides of 30-60-90 triangle cannot be equal
so option c and option D are not possible
sqrt(2) is also not possible because we have sqrt(3) in general ratio
Step-by-step explanation:
2. What is the average salary offered to a Stony Brook college graduate? To study this question you and a friend interview N students that graduated last year, and ask them what they earn. Student i's response was recorded as Yi. You are interested in the average, My. You assumed that the sample of Y's is iid. First you calculate the following estimate of uy: W1 N 1 N i=1 ΣΥ. . You and your friend each collected half the data. Thus you collected Y1, ..., YN/2 and your friend collected Yn/2+1, ... , Yn. Unfortunately, it turns out that your friend collected the data at a wild alumnae party, and you suspect that these data may not be as precise as your data. So whereas the variance of your data is, var(Y;) = 0%, i = 1, ...,N/2. then your friends data have the variance, var(Y) = oʻ(1 + 3c), i=N/2+1, ...,N, for some constant c> 0. (d) Your friend is sorry that half the data are not as precise as they could have been, and suggest that you discard the noise data, and simply use hr Na Ex? Y; as your estimator for my. Which estimator is most efficient (has the smallest variance) în or îz? Does your answer depend on c? = N.Σ. (Υ – μ.) - = (e) Suppose now that c = 0 such that var(Y;) = o2 for i = 1, ...,N. You have N = 300 observation and calculate s2 = 20,000,000 and î1 = $48,000. Before collecting the data, your friend argues mean salary, my, is s $50,000, using a 1% significance level. Write down the confidence interval at 1% significance level and decide whether you will accept your friend's
The more precise estimator ẏ₁ is the most efficient in estimating the average salary. With given values, the confidence interval is calculated to determine whether to accept the claim of a $50,000 mean salary.
In this scenario, we have two estimators for the average salary: ẏ₁, which uses precise data, and ẏ₂, which includes less precise data. The efficiency of the estimators depends on the variance of the data. If we compare the variances, Var(ẏ₁) = 0% and Var(ẏ₂) = o²(1 + 3c). Since Var(ẏ₁) is zero, it implies that ẏ₁ is the most efficient estimator. The answer does not depend on the value of c.
In the second part, with c = 0, we have Var(Y) = o². Given N = 300, s² = 20,000,000, and ẏ₁ = $48,000, we can use these values to construct a confidence interval. Using a 1% significance level, the critical value is 2.57 (from the standard normal distribution). The confidence interval is given by ẏ₁ ± 2.57 * sqrt(s²/N), which results in $48,000 ± 2.57 * sqrt(20,000,000/300). If this interval contains $50,000, we would accept your friend's claim; otherwise, we would reject it.
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Natalia and her friends held a bake sale to benefit a local charity. The friends sold 15 cakes on the first day and 22 cakes on the second day of the bake sale. They collected $60 on the first day and $88 on the second day. Write an equation to represent the amount R Natalia and her friends raised after selling c cakes.
The equation to represent the amount 'R' Natalia and her friends raised after selling 'c' cakes will be;
⇒ R = 4c
What is Equation of line?
The equation of line passing through the points (x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
Given that;
The friends sold 15 cakes on the first day and 22 cakes on the second day of the bake sale.
On first day, they collect = $60
On second day, they collect = $88
Now,
We have to find the equation as;
⇒ R = mc + b
We need to find the value of m and b.
Since, The first point = (15, 60)
The second point = (22, 88)
Hence, Slope (m) = (88 - 60) / (22 - 15)
m = 28 / 7
m = 4
And, To find b substitute R = 60 , c = 15 and m = 4 in above equation,
⇒ R = mc + b
⇒ 60 = 4 x 15 + b
⇒ b = 0
Thus, Substitute m = 4 and b = 0 in equation (i) we get;
⇒ R = mc + b
⇒ R = 4c + 0
⇒ R = 4c
Therefore, The equation to represent the amount 'R' Natalia and her friends raised after selling 'c' cakes will be;
⇒ R = 4c
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The length of Side C D is 11 inches and the length of Side C F is 11 StartRoot 3 EndRoot inches. What is the length of Side D F? Round to the nearest tenth.
11 inches
15.6 inches
19.1 inches
22 inches
Answer:
b
Step-by-step explanation:
Let T be total amount (in dollars) saved using both plans combined. Write an equation relating T to N. Simplify your answer as much as possible.Hong and his wife are each starting a saving plan. Hong will initially set aside $250 and then add \$155 every month to the savings. The amount A (in dollars) saved this way is given by the function A=155N-25O, where N is the number of months he has been saving His wife will not set an initial amount aside but will add $385 to the savings every month. The amount B (in dollars) saved using this plan is given by the function B = 385N
Answer:
T = 540N + 250
Explanation:
The amount saved by Hong after N months is
A = 155N + 250
And the amount saved by his wife after N months is
B = 385N
Then, the total amount saved is the sum of these expressions, so
T = A + B
T = (155N + 250) + (385N)
Simplifying, we get
T = 155N + 250 + 385N
T = 540N + 250
Therefore, the answer is
T = 540N + 250
The focus of a parabola is (3, −7) and the directrix is y=−4.
What is an equation of the parabola?
Responses
(x−3)2=−3(y+10)
open parenthesis x minus 3 close parenthesis squared equals negative 3 open parenthesis y plus 10 close parenthesis
(x−3)2=−1.5(y+5.5)
open parenthesis x minus 3 close parenthesis squared equals negative 1.5 open parenthesis y plus 5.5 close parenthesis
(x−3)2=−12(y+10)
open parenthesis x minus 3 close parenthesis squared equals negative 12 open parenthesis y plus 10 close parenthesis
(x−3)2=−6(y+5.5)
The equation of the parabola is (x-3)² = -4(y+4)
Given data ,
Let the equation of the parabola be represented as A
Now , the value of A is
The focus of the parabola is F ( 3 , -7 )
Let the directrix is y = -3
And , y = a ( x - h )² + k
where ( h , k ) is the vertex and ( h , k + p ) is the focus
y is the directrix and y = k – p
(x-3)² = -4y - 16
Multiplying both sides by -1/4, we get:
-(1/4)(x-3)² = y + 4
Subtracting 4 from both sides, we get:
-(1/4)(x-3)² - 4 = y
So the equation of the parabola with focus (3,-7) and directrix y=-4 is:
y = -(1/4)(x-3)² - 4, which is equivalent to (x-3)² = -4(y+4)
Hence , the equation is (x-3)² = -4(y+4)
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write an inequality relating −2e−nn2 to 121n2 for ≥ n≥1. (express numbers in exact form. use symbolic notation and fractions where needed.)
The inequality relating −2\(e^{(-n/n^2)}\) to 121/\(n^2\) for n ≥ 1 is -2\(e^{(-n/n^2)}\) ≤ 121/\(n^2\).
To derive the inequality, we start by comparing the expressions −2\(e^{(-n/n^2)}\) and 121/\(n^2\).
Since we want to express the numbers in exact form, we keep them as they are.
The inequality states that −2\(e^{(-n/n^2)}\) is less than or equal to 121/\(n^2\).
This means that the left-hand side is either less than or equal to the right-hand side.
The exponential function e^x is always positive, so −2\(e^{(-n/n^2)}\) is negative or zero.
On the other hand, 121/\(n^2\) is positive for n ≥ 1.
Therefore, the inequality −2\(e^{(-n/n^2)}\) ≤ 121/\(n^2\) holds true for n ≥ 1.
The negative or zero value of −2\(e^{(-n/n^2)}\) ensures that it will be less than or equal to the positive value of 121/\(n^2\).
In symbolic notation, the inequality can be written as −2\(e^{(-n/n^2)}\) ≤ 121/\(n^2\) for n ≥ 1.
This representation captures the relationship between the two expressions and establishes the condition that must be satisfied for the inequality to hold.
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The flight from Washington, DC to Portland, OR is
about 7 hours long. You book your ticket and plan to
depart DC at 7:30 AM.
What time is it in Portland, OR when you land?
What time is it in Washington, DC when you land?
Answer:
The cheapest flight from Washington, D.C. to Portland was found 87 days before departure, on average. Book at least 2 weeks before departure in order to get a
Step-by-step explanation:
Mila and Nadia have R480 between them.
Mila has 7 times as much as Nadia.
How much does each of them have?
Answer:
Mila= 420 Nadia= 60
Step-by-step explanation:
Let's call Mila 7x. And x to Nadia. The two of them had a total of 480s.
Then we say 7x + x. Their total is 8x. So 480 = 8x. We divide both sides by 8. Here x = 60. Since Mila is 7x, we find Mila as 7.60 = 420, and since Nadia as x, we find Nadia as 1.60 = 60.
If there is any place you don't understand, you can ask.
#Achievements
Calculate the indicated Riemann sum S. for the function f(x) = 20-2x2. Partition [-1,9] into five subintervals of equal length, and for each subinterval [X-1.X]. let k = (xx-1+xk) /2.
To calculate the indicated Riemann sum S for the function f(x) = 20 - 2x^2, we need to partition the interval [-1, 9] into five subintervals of equal length and evaluate the sum using the given formula.
The width of each subinterval is determined by dividing the length of the interval by the number of subintervals, which in this case is (9 - (-1)) / 5 = 2.
Using the formula for the midpoint, k = (x_i + x_{i-1}) / 2, we can calculate the midpoint of each subinterval. Let's denote the midpoints as k_1, k_2, k_3, k_4, and k_5 for the five subintervals.
The Riemann sum S is then given by the sum of f(k_i) multiplied by the width of the subinterval for each i.
S = (f(k_1) * 2) + (f(k_2) * 2) + (f(k_3) * 2) + (f(k_4) * 2) + (f(k_5) * 2)
To obtain the specific values of k_i and calculate the sum, we need to find the midpoints of the subintervals and evaluate the function f(x) at those points.
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Please help me #desprate
For the given table of values for a polynomial function, where must the zeros of the function lie?
A. between 3.0 and 3.5 and between 4.0 and 4.5
B. between 3.5 and 4.0 and between 4.0 and 4.5
C. between 4.0 and 4.5 and between 4.5 and 5.0
D. between 3 .5 and 4.0 and between 4.0 and 4.5
E. between 3 .5 and 4.0 and between 5.0 and 5.5
Answer:
A. Between 3.0 and 3.5 and between 4.0 and 4.5
Step-by-step explanation:
The zeroes of a function occur whenever a value of x returns zero. To predict where the zeroes lie, determine the interval(s) where the function crosses the x-axis. This occurs when either \(f(x)\) goes from a negative value to a positive value or vice versa.
From \(x=3.0\) and \(x=3.5\), the y-values go from 4.0 (positive) to -0.2 (negative), respectively. Therefore, there must be a zero in this interval.
From \(x=4.0\) and \(x=4.5\), the y-values go from -0.8 (negative) to 0.1 (positive), respectively. Therefore, there must also be a zero in this interval.
Thus, the zeros of this function occur between 3.0 and 3.5 and between 4.0 and 4.5, leading to answer choice A.
Answer:
between 3.0 and 3.5 and between 4.0 and 4.5
Step-by-step explanation:
Plato/Edmentum
Bryant Industries uses forecasting to estimate the number of orders that will be placed by their customers. The table below gives the sales figures for the last four months. Month 2 3 4 5 Sales 924 91
Bryant Industries uses forecasting to estimate the number of orders that will be placed by their customers. The table below gives the sales figures for the last four months.Month2345Sales92491942004There are different forecasting techniques used by companies like Bryant Industries to predict future sales.
One of the most widely used methods is the time-series method. This method is particularly useful when the demand for a product or service changes over time and when there are no external factors that affect the sales. In this case, we can use a time-series method called the moving average to estimate future sales. The moving average is a time-series method that uses the average of past sales data to estimate future sales. It is particularly useful when there are no external factors that affect the sales. In this case, we can use a 3-month moving average to estimate future sales. The 3-month moving average is calculated as follows: (924 + 919 + 420) / 3 = 754.33. This means that we can expect sales of around 754 units next month. The moving average method is easy to use and is a good way to get a quick estimate of future sales. However, it has some limitations. For example, it does not take into account external factors that may affect sales, such as changes in the economy or in consumer behavior.
In conclusion, Bryant Industries can use the moving average method to estimate future sales. However, they should also consider other factors that may affect sales, such as changes in the economy or in consumer behavior. By doing so, they can make more accurate forecasts and improve their overall performance.
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A president and vice-president for an honor society are chosen from twelve people. How many different president/vice-president combinations are possible?
There are 12 different possibilities for a president. Therefore, there are 11 possibilities for vice-president.
We calculate this combination when we multiply 12 x 11:
12 x 11 = 132
Therefore, there are 132 different ways to make combinations.
if 12 identical blackboards are to be divided among 4 schools a, b, c, d such that school a receives at least 2 boards and school b receives at least one board, how many divisions are possible?
Answer:
To solve this problem, we can use a combination formula. We need to distribute 12 identical blackboards among 4 schools, so the total number of possible divisions is:
C(12+4-1, 4-1) = C(15, 3) = 455
However, we need to consider the condition that school a receives at least 2 boards and school b receives at least one board. We can use a complementary counting approach to solve this.
First, let's find the total number of divisions where school a receives less than 2 boards and school b receives less than 1 board. If school a receives 0 or 1 board, that leaves 11 or 10 boards to be divided among the remaining schools. Similarly, if school b receives 0 boards, that leaves 12 boards to be divided among the remaining schools. Using the combination formula, we can find the number of possible divisions:
C(11+3-1, 3-1) * C(12+3-1, 3-1) = C(13, 2) * C(14, 2) = 8190
Now, we can subtract this number from the total number of possible divisions to find the number of divisions that satisfy the conditions:
455 - 8190 = -7735
Wait, that's a negative number! What does it mean? It means that there are no possible divisions that satisfy the conditions. In other words, it's impossible to distribute 12 blackboards among 4 schools such that school a receives at least 2 boards and school b receives at least one board.
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