(x + 7) is a factor of f(x) = x^3 - 3x^2 + 2x - 8. By using synthetic division, we find that the remainder is 0.
To determine if (x + 7) is a factor of the polynomial f(x) = x^3 - 3x^2 + 2x - 8, we can use synthetic division.
Performing synthetic division with the divisor (x + 7), we set up the division as follows:
-7 | 1 -3 2 -8
|_________________
1 -10 72 -520
The numbers in the bottom row of the synthetic division represent the coefficients of the quotient polynomial. In this case, the quotient polynomial is 1x^2 - 10x + 72, and the remainder is -520.
Since the remainder is not zero, (x + 7) is not a factor of f(x). If (x + 7) were a factor, the remainder would be zero.
Therefore, (x + 7) is not a factor of f(x) = x^3 - 3x^2 + 2x - 8.
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what is 8.7+[2.7-(4x0.5)]x9
Distribute
3x(5x-5)
a) 12x^2+8x
b) 15x^2+10x
c) 12x^2-9x
d) 15x^2-15x
Answer:
d
Step-by-step explanation:
3x times 5x equals 15x^2
3x times -5 equals -15x
---> 15x^2 - 15x
what do you think???
Answer:
To entertain
Step-by-step explanation:
Because the dad made a joke to entertain, and the story is entertaining the readers.
Answer: entertain
Step-by-step explanation:
Fifty boxes labeled with numbers from 1 to 50 are laid on a table. In each box there is a blue ball and a red ball. From each box that you randomly choose, you pick only one ball randomly, without looking into the box. Right after a ball is picked up, its corresponding box is moved away from the table to avoid picking the same box again. You continue this process until 25 boxes are chosen.
a) What is the probability of picking 8 blue balls and 17 red balls from boxes with even numbered labels?
b) If accidentally you see the fifth ball after being picked up to be Red, what would be the probability of picking 8 blue balls mentioned as above.
According to the question Fifty boxes labeled with numbers from 1 to 50 are laid on a table. In each box there is a blue ball and a red ball are as follows :
a) To calculate the probability of picking 8 blue balls and 17 red balls from boxes with even-numbered labels, we need to consider the total number of ways this can occur divided by the total number of possible outcomes.
There are 25 boxes to be chosen, and the boxes with even-numbered labels are numbered 2, 4, 6, ..., 50. There are 25/2 = 12.5 even-numbered boxes.
The probability of picking a blue ball from each even-numbered box is 1/2, and the probability of picking a red ball is also 1/2.
The probability of picking 8 blue balls and 17 red balls from the even-numbered boxes can be calculated using the binomial probability formula:
[tex]\[P(\text{{8 blue balls and 17 red balls from even-numbered boxes}}) = \binom{{12.5}}{{8}} \left(\frac{{1}}{{2}}\right)^8 \left(\frac{{1}}{{2}}\right)^{17}\][/tex]
b) If we accidentally see the fifth ball to be red, it means we have already chosen 4 boxes and picked 4 red balls.
The probability of picking 4 red balls from the first 4 boxes is [tex]\(\left(\frac{{1}}{{2}}\right)^4\).[/tex]
Now we need to calculate the probability of picking 4 blue balls and 13 red balls from the remaining 21 even-numbered boxes.
The probability can be calculated as:
[tex]\[P(\text{{8 blue balls and 17 red balls from remaining even-numbered boxes}}) = \binom{{21}}{{8}} \left(\frac{{1}}{{2}}\right)^8 \left(\frac{{1}}{{2}}\right)^{13}\][/tex]
The overall probability is the product of the two probabilities calculated in part a) and b).
You can substitute the values and calculate the probabilities using a calculator or computer software.
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The volume of a sphere is 36 cubic inches. What is the radius of the sphere?
Answer:
ok we know that volume of a sphere is 4/3 pi r cubed so just replace the letters with the entities given
Answer:
2.7 cm
Step-by-step explanation:
Which function is graphed?
Answer: it’s B or C
Step-by-step explanation
Event A: You roll a double. Event B: The sum of the two scores is even. Event C: The score on the blue die is greater than the score on the red die. Event D: You get a 6 on the red die. 1. Think about the probability of two of these events both happening in one roll of the two dice. For example, the probability that events A and D both occur—"P(A and D)"—is 1/36, because only a double 6 satisfies the requirements. There are five other possibilities of two events both happening in one roll. What are the probabilities of those five other possibilities? a. P(A and B) b. PIA and C) C. P(B and C) d. P(B andD) e. P(C and D)
The probabilities of the five other possibilities are as follows: a) P(A and B) = 1/18, b) P(A and C) = 1/12, c) P(B and C) = 5/18, d) P(B and D) = 1/18, and e) P(C and D) = 1/6.
a) To calculate P(A and B), we need to find the number of outcomes where both a double and an even sum occur. There are 18 possible outcomes with doubles (6 possibilities) multiplied by the number of outcomes where the sum is even (3 possibilities), resulting in a probability of 1/18.
b) P(A and C) requires both a double and the blue die having a higher score than the red die. Out of the 36 possible outcomes, there are 12 outcomes where a double occurs and the blue die score is greater than the red die score, resulting in a probability of 1/12.
c) To calculate P(B and C), we need to find the number of outcomes where the sum is even and the blue die score is greater than the red die score. There are 18 possible outcomes where the sum is even, and out of these, 5 outcomes also satisfy the condition for the blue die score being greater than the red die score. Therefore, the probability is 5/18.
d) P(B and D) requires both an even sum and a 6 on the red die. Out of the 36 possible outcomes, 2 outcomes satisfy these conditions (rolling a 3 on the blue die and rolling a 6 on the red die, or vice versa), resulting in a probability of 1/18.
e) P(C and D) involves both the blue die having a higher score than the red die and rolling a 6 on the red die. Out of the 36 possible outcomes, 6 outcomes satisfy these conditions, resulting in a probability of 1/6.
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I need help plz I’ll appreciated
Answer:
y = x -3
Step-by-step explanation:
What is move-in costs and what might be included in move-in costs?
Answer:
A move in cost is a non-refundable fee that landlords charge new tenants to cover the cost of touch ups and small changes made to the rental
Find critical value t*n−1 depends on the confidence level, C, and the number of degrees of freedom, n−1.
Find The confidence interval for the population mean, μ is y±t*n−1sn, where y is the sample mean, s is the sample standard deviation, and n is the sample size. The critical value t*n−1
The confidence interval for the population mean, μ is y ± t*n-1sn, where y is the sample mean, s is the sample standard deviation, and n is the sample size.
The critical value t*n-1 depends on the confidence level, C, and the number of degrees of freedom, n-1.Critical value t*n−1:The critical value t*n-1 refers to the value of t that separates the middle 100C% of the t distribution from the extreme (tail) regions, where C is the specified confidence level.
The number of degrees of freedom is n - 1. A t-value can be used to determine the confidence interval for a population mean with unknown standard deviation if the sample size is less than 30 or the population is not normally distributed.
Confidence interval:If y is the sample mean and s is the sample standard deviation, the confidence interval for the population mean μ is y ± t*n-1sn, where n is the sample size. The confidence interval is a range of values around the sample statistic that is likely to contain the true population parameter. The confidence interval is used to estimate the value of an unknown parameter, such as a population mean or proportion, and to quantify the level of uncertainty surrounding that estimate.
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for the variable A type the word lambda, fory type the word gamma, otherwise treat these as you would any other variable We will solve the heat equation -6, 0
The required heat equation is u(x, t) = (A×cos(λx) + B×sin(λx)) × exp(-λ²t)
To solve the heat equation in the given interval [-6, 0], we can use the separation of variables method. Let's denote the dependent variable as u(x, t), where x represents the spatial variable and t represents the temporal variable.
The heat equation in one dimension is given by:
∂u/∂t = α ∂²u/∂x²,
where α is the thermal diffusivity constant.
To solve this equation, we assume that the solution can be represented as a product of two functions, each depending on a single variable:
u(x, t) = X(x)T(t).
Substituting this into the heat equation, we have:
X(x)T'(t) = αX''(x)T(t),
where prime (') denotes differentiation with respect to the variable.
Dividing both sides by αX(x)T(t), we get:
T'(t)/T(t) = αX''(x)/X(x).
Since the left side depends only on t and the right side depends only on x, both sides must be equal to a constant, which we'll denote as -λ²:
T'(t)/T(t) = -λ² = αX''(x)/X(x).
Now, let's solve the temporal part of the equation:
T'(t)/T(t) = -λ²
This is a separable ordinary differential equation (ODE), and its general solution is given by:
T(t) = exp(-λ²t).
Next, let's solve the spatial part of the equation:
αX''(x)/X(x) = -λ².
This is also a separable ODE, and its general solution is given by:
X(x) = A×cos(λx) + B×sin(λx),
where A and B are arbitrary constants.
Therefore, the general solution to the heat equation is:
u(x, t) = (A×cos(λx) + B×sin(λx)) × exp(-λ²t).
Since we have the given interval [-6, 0], we can apply appropriate boundary conditions to determine the values of A, B, and λ that satisfy the problem.
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The nth term of another sequence is n² + 7n
Find the 10th term of the sequence
Answer with explanation will get marked as brainiest
Answer:
a(10) = 170
Step-by-step explanation:
Given that,
The nth term fo the sequence is :
a(n) = n² + 7n
We need to find the 10th term of the sequence.
Put n = 10 in the above sequence,
a(10) = (10)² + 7(10)
= 100 + 70
= 170
So, the 10th term of the sequence is 170.
is known that 47% of new freshmen at State University will graduate within 6 years. Suppose we take a random sample of n=64 new freshmen at State University. Let X = the number of these freshmen who graduate within 6 years. (Do not use a normal approximation for this problem. This is a binomial problem.) a) What is the probability that X < 29? b) What is the probability that 28 SXS 31? c) What is the probability that X = 31? d) What is the expected value of X? e) What is the variance of X?
On the probability, expected value and variance :
a) 0.000013b) 0.00414c) 0.000016d) 30.08e) 11.84How to solve for a ransom sample?a) The probability that X < 29 is given by:
P(X < 29) = P(X = 0) + P(X = 1) + ... + P(X = 28)
The probability of each of these events is given by the binomial distribution:
[tex]P(X = k) = \binom{n}{k} p^k (1 - p)^{n - k}[/tex]
where n = 64, p = 0.47, and k = 0, 1, ..., 28.
Plugging in these values:
[tex]P(X < 29) = \binom{64}{0} (0.47)^0 (1 - 0.47)^{64 - 0} + \binom{64}{1} (0.47)^1 (1 - 0.47)^{64 - 1} + ... + \binom{64}{28} (0.47)^{28} (1 - 0.47)^{64 - 28}[/tex]
≈ 0.000013
b) The probability that 28 SXS 31 is given by:
P(28 SXS 31) = P(X = 28) + P(X = 29) + P(X = 30) + P(X = 31)
Plugging in the values from the binomial distribution:
[tex]P(28 SXS 31) = \binom{64}{28} (0.47)^{28} (1 - 0.47)^{64 - 28} + \binom{64}{29} (0.47)^{29} (1 - 0.47)^{64 - 29} + \binom{64}{30} (0.47)^{30} (1 - 0.47)^{64 - 30} + \binom{64}{31} (0.47)^{31} (1 - 0.47)^{64 - 31}[/tex]
≈ 0.00414
c) The probability that X = 31 is given by:
[tex]P(X = 31) = \binom{64}{31} (0.47)^{31} (1 - 0.47)^{64 - 31}[/tex]
≈ 0.000016
d) The expected value of X is given by:
E(X) = np
where n = 64 and p = 0.47.
E(X) = 64 (0.47) = 30.08
e) The variance of X is given by:
Var(X) = np(1 - p)
Var(X) = 64 (0.47) (1 - 0.47) = 11.84
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Consider the following pair of equations:
y = −2x + 8
y = x − 1
Explain how you will solve the pair of equations by substitution. Show all the steps and write the solution in (x, y) form.
Answer:
y = -2x + 8
x = 3
y = x - 1
y = 2
Step-by-step explanation:
if 2x + y = 8 and x - y = 1
you can solve using substitution, elimination, matrix etc.
You will find that x = 3 and y = 2
Hope this helped.
Write an equation in slope-intercept form for the line that passes through the
given point and is parallel to the graph of the given equation. (4,-6) y=-3/4x+1
A square underwent a dilation using a scale factor of 1:4. Find the missing side length, x, of the smaller square
Answer:
[tex]x= 3.5[/tex]
Step-by-step explanation:
Given
[tex]k =1:4[/tex] --- scale factor
See attachment for squares
Required
Find x
The corresponding side of length x on the bigger square is 14.
So, we have:
[tex]k = x : 14[/tex]
Equate both values of k
[tex]x : 14 = 1 : 4[/tex]
Express as fractions
[tex]\frac{x }{ 14 }= \frac{1 }{ 4}[/tex]
Solve for x
[tex]x= \frac{1 }{ 4} * 14[/tex]
[tex]x= \frac{14}{4}[/tex]
[tex]x= 3.5[/tex]
WILL MARK BRAINLIEST ON CORRECT ANSWER
Which type of line symmetry does the figure have?
vertical
horizontal
diagonal
none
3.1 Find the HCF and LCM for the following three numbers: 868, 372 and 992
Answer:
HCF of 868,372,and 992 is 124
LCM of 868,372,and 992 is 20832
hope this answer helps you...
Exercise 1. A batch of 400 containers for frozen orange juice contains 4 that are defective. Two are selected, at random, without replacement from the batch.
(1) What is the probability that the second one selected is defective given that the first one was defective?
(2) What is the probability that both are defective?
(3) What is the probability that both are non-defective?
Answer:
1. 1/13,300
2. 1/13,300
3. 2607/2660
Step-by-step explanation:
Probability is the ratio of the number of possible outcomes to the number of total outcome. The probability that an event will happen added to the probability of the same even not happening is 1.
Given that there are 400 containers of frozen orange juice with 4 that are defective,
non-defective = 400 - 4 = 396
Probability of selecting
Non-defective = 396/400 = 99/100
Defective = 4/100 = 1/100
the probability that the second one selected is defective given that the first one was defective is the same as the probability that both are defective
= 4/400 *3/399
= 1/13,300
the probability that both are non-defective
= 396/400 * 395/399
= 99/100 * 395/399
= 33*79/20*133
= 2607/2660
part d: using the diameter of each pizza, determine the scale factor relationship between the pizzas. (1 point)
To determine the scale factor relationship between the pizzas based on their diameters, we need to compare the sizes of the pizzas. The scale factor represents the ratio between the corresponding measurements of two similar objects.
In this case, we would compare the diameters of the pizzas. The scale factor can be calculated by dividing the diameter of one pizza by the diameter of another pizza. For example, if Pizza A has a diameter of 12 inches and Pizza B has a diameter of 8 inches, the scale factor between them would be: Scale Factor = Diameter of Pizza A / Diameter of Pizza B = 12 inches / 8 inches = 1.5. Therefore, the scale factor relationship between the pizzas is 1.5. This means that the diameter of Pizza A is 1.5 times larger than the diameter of Pizza B.
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How many unit cubes are on each layer of this cube
There are 16 cubes in each layer.
What are cube?A cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. Viewed from a corner it is a hexagon and its net is usually depicted as a cross.
Given that, a cube,
Since, we know that, all sides of a cube are equal and the cross-section of the cube is a square,
Therefore, counting the cubes of the front face,
4 cubes vertical and 4 cubes horizontal,
Therefore, total cube in front face = 4×4 = 16
Therefore, cubes in each layer is 16.
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Find the perimeter of a regular hexagon with side length 4 meters.
Answer:
i think it is 24 meters
Answer:
24 meters
Step-by-step explanation:
perimeter of regular hexagon is
perimeter = 6 × a
where a is the side length
so in the problem a = 4 meters
by apply the formula you will have
perimeter = 6 x 4 meters
perimeter =24 meters
I need help with this plssss
Expert plsss help meeeee
Answer: 350
Step-by-step explanation:
Answer:
1,283 m3
Step-by-step explanation:
Ok so the volume formula is:
V = π×r² × h/3π (pi) = 3.14
² = power of two so that number times that number
Example:
3² = 3 × 3 = 9
To find the radius since the diameter is given divide by 2:
14 / 2 = 7
Next we solve the equation:
V = 3.14 × 7² × 25/3 = 1282.817
To round to the neareast whole number 1,283
Find the inverse of the function and state its domain and range. {(-3, 4), (-1,5), (0, 2), (2, 6), (5, 7)} a. {(4, -3), (5, -1), (2.0), (6,2), (7,5)} D = {2, 4, 5, 6, 7); R = {-3, 1,0, 2, 5) b. {(3, 4), (1,5), (0, 2), (-2, 6), (-5, 7)); D = (3, 1,0.-2. -5); R = {2, 4, 5, 6, 7} O (3.-4), (1,-5), (0, -2), (-2, -6). (-5, -7)}; D = (3, 1, 0, -2. -5); R = (-7 -6, -5, -4.-2} c. [(-3.-4), (-1, 5), (0.2). (2. -6), (5,-2)}; D = (-3, 1.0, 2.5); R = (-7 -6, 5, 4-2)
The inverse function is obtained by interchanging the x and y values of each point. The correct option is b: {(3, 4), (1, 5), (0, 2), (-2, 6), (-5, 7)}; D = {3, 1, 0, -2, -5}; R = {4, 5, 2, 6, 7}.
The domain of the inverse function consists of the x-values from the original function, and the range consists of the y-values from the original function
To compute the inverse of the function, we interchange the x and y values of each point. The inverse function is {(4, 3), (5, 1), (2, 0), (6, -2), (7, -5)}.
The domain of the inverse function is D = {3, 1, 0, -2, -5} which consists of the x-values from the original function. The range of the inverse function is R = {4, 5, 2, 6, 7} which corresponds to the y-values from the original function.
It's important to note that in the inverse function, the roles of the domain and range are swapped. The x-values of the original function become the y-values of the inverse function, and vice versa.
Therefore, the correct answer is option b: {(3, 4), (1, 5), (0, 2), (-2, 6), (-5, 7)}; D = {3, 1, 0, -2, -5}; R = {4, 5, 2, 6, 7}.
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Help! Will give brainliest and 10 points!
Answer:
its b
Step-by-step explanation:
trust me
Please Help!
Factor the following trinomial
[tex]9x^2-24x+16[/tex]
Please show work
=> 9x² - 24x + 16
Split the middle term(term with x) in such a manner so that the product of those parts is equal to the product of term with x² and constant. Here, those parts are 12 & 12 as 12*12 = 9*16.
=> 9x² - 24x + 16
=> 9x² - (12 + 12)x + 16
=> 9x² - 12x - 12x + 16
=> 3x(3x - 4) - 4(3x - 4)
=> (3x - 4)(3x - 4)
Method 2
=> 9x² - 24x + 16
=> (3x)² - 2(3x*4) + 4²
=> (3x - 4)²
=> (3x - 4)(3x - 4)
Method 3
In case if you can't find the factors of the middle term.
Say f(x) = 0, find the zeroes using quadratic formula. Zeroes of this eqⁿ are [-(-24) ± √24²-4(9)(16)] / 2(9) = 4/3 & 4/3
Therefore, f(x) = (x - 4/3)(x - 4/3) = (3x - 4)(3x - 4)/9
Ignore the numeric constant.
f(x) = (3x - 4)(3x - 4)
Which ordered pair would not be a solution to y = x3 – X ?
(-4,-60)
(-3,-24)
(-2,-6)
(-1,-2)
Answer:
Step-by-step explanation:
Find The Circumference Of A Circle With D =22.1
Answer:
138.86
Step-by-step explanation:
Multiply the radius by 2 to get the diameter.
Multiply the result by π, or 3.14 for an estimation.
That's it; you found the circumference of the circle.
Consider the differential equation, and its boundary conditions x2 dạy d.x2 2.x dy da 4y = re-2 y(0) = y(00) = 0 - Determine the Green's function and use it to get the solution
Answer:
y(x)=0
Step-by-step explanation:
To solve the given differential equation using Green's function, we need to first determine the Green's function associated with the given boundary conditions.
The Green's function, G(x, ξ), satisfies the following equation:
(x^2 d^2G / dx^2) + (2x dG / dx) - 4G = δ(x - ξ)
where δ(x - ξ) is the Dirac delta function. We can solve this equation subject to the boundary conditions:
G(0, ξ) = G(∞, ξ) = 0
To solve this differential equation, we assume a solution of the form:
G(x, ξ) = A(x)B(ξ)
Substituting this form into the differential equation and simplifying, we get:
x^2 d^2A / dx^2 + 2x dA / dx - 4A = 0
This is a homogeneous second-order ordinary differential equation. We can solve it by assuming a power series solution of the form:
A(x) = ∑[n=0 to ∞] (a_n x^n)
Substituting this series into the differential equation and equating coefficients of like powers of x, we get:
a_n [(n + 2)(n + 1) - 4] = 0
Solving this equation for the coefficients, we find:
a_0 = 0
a_1 = 0
a_n = 4 / [(n + 2)(n + 1)] for n ≥ 2
Therefore, the solution for A(x) is:
A(x) = 4 * ∑[n=2 to ∞] (x^n / [(n + 2)(n + 1)])
Now, we can substitute the solution for A(x) into the form of the Green's function:
G(x, ξ) = A(x)B(ξ)
G(x, ξ) = 4 * ∑[n=2 to ∞] (x^n / [(n + 2)(n + 1)]) * B(ξ)
To determine B(ξ), we impose the boundary conditions:
G(0, ξ) = 0 => 4 * ∑[n=2 to ∞] (0 / [(n + 2)(n + 1)]) * B(ξ) = 0
G(∞, ξ) = 0 => 4 * ∑[n=2 to ∞] (ξ^n / [(n + 2)(n + 1)]) * B(ξ) = 0
From these conditions, we can conclude that B(ξ) = 0. Hence, the Green's function is:
G(x, ξ) = 0
Now, to obtain the solution to the differential equation, we can use the Green's function in the following integral form:
y(x) = ∫[0 to ∞] G(x, ξ) f(ξ) dξ
where f(ξ) is the inhomogeneous term in the original differential equation.
Since G(x, ξ) = 0, the integral evaluates to zero as well. Therefore, the solution to the given differential equation is:
y(x) = 0
In conclusion, the solution to the differential equation with the given boundary conditions is y(x) = 0.
If you give me five apples a day how many days would it take me to get 800 apples.
Answer:
160 days
Step-by-step explanation:
800 divided by 5 equal 160
Answer:
your answer is 160 days
Step-by-step explanation:
800÷5=160 days
I hope this helps
have a nice day/night
mark brainliest, please :)