Evaluate the iterated integral.
π/2
0
y/7
0
4/y sin y dz dx dy
0

The derivatives are:

[tex]y' = (2x + 4y) / (4x - 6y)[/tex]

[tex]y'' = [(4x - 6y)(2 + 4((2x + 4y) / (4x - 6y))) - (2x + 4y)(4 - 6((2x + 4y) / (4x - 6y)))] / (4x - 6y)^2[/tex]

To find y' and y'' for the given equation x^2 + 4xy - 3y^2 = 8, follow these steps:

Step 1: Differentiate both sides of the equation with respect to x.
For the left side, use the product rule for 4xy and the chain rule for -3y^2.
[tex]d(x^2)/dx + d(4xy)/dx - d(3y^2)/dx = d(8)/dx[/tex]

Step 2: Calculate the derivatives.
[tex]2x + 4(dy/dx * x + y) - 6y(dy/dx) = 0[/tex]

Step 3: Solve for y'.
Rearrange the equation to isolate dy/dx (y'):
[tex]y' = (2x + 4y) / (4x - 6y)[/tex]

Step 4: Differentiate y' with respect to x to find y''.
Use the quotient rule: [tex](v * du/dx - u * dv/dx) / v^2[/tex],

where u = (2x + 4y) and v = (4x - 6y).
[tex]y'' = [(4x - 6y)(2 + 4(dy/dx)) - (2x + 4y)(4 - 6(dy/dx))] / (4x - 6y)^2[/tex]

Step 5: Substitute y' back into the equation for y''.
[tex]y'' = [(4x - 6y)(2 + 4((2x + 4y) / (4x - 6y))) - (2x + 4y)(4 - 6((2x + 4y) / (4x - 6y)))] / (4x - 6y)^2[/tex]

This is the expression for y'' in terms of x and y.

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There are [tex](1/2) * (2^{100} - 2)[/tex] partitions of {1, 2, ..., 100} into two parts.

We can use the following formula:

Number of partitions = (n choose k)/2, where n is the total number of elements, and k is the number of elements in one of the two parts.

In this case, we want to divide the set {1, 2, ..., 100} into two parts, each with k elements.

Since we are not distinguishing between the two parts, we divide the total number of partitions by 2.

The number of ways to choose k elements from a set of n elements is given by the binomial coefficient (n choose k).

So the number of partitions of {1, 2, ..., 100} into two parts is:

(100 choose k)/2

where k is any integer between 1 and 99 (inclusive).

To find the total number of partitions, we need to sum this expression for all values of k between 1 and 99:

Number of partitions = (100 choose 1)/2 + (100 choose 2)/2 + ... + (100 choose 99)/2

This is equivalent to:

Number of partitions = (1/2) * ([tex]2^{100}[/tex] - 2)

Therefore, there are (1/2) * ([tex]2^{100][/tex] - 2) partitions of {1, 2, ..., 100} into two parts.

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A recursive sequence is a mathematical sequence in which each term is defined in terms of one or more preceding terms in the sequence. This means that the value of each term in the sequence depends on the values of the previous terms in the sequence.In other words, a recursive sequence is a sequence where each term is generated by applying a certain rule or formula to the previous term(s). The rule or formula that generates each term is called the recursive formula.

Here are the recursive definitions for each of the given basis cases:
A) An = 4n-2 An-1 + 4 Ao, with A1 = 4A0 - 4
This sequence starts with a given value A0 and each subsequent term is 4 times the previous term minus 4 times the initial value.

B) An = n(n+1) An-1 + A0, with A1 = A0
This sequence starts with a given value A0 and each subsequent term is the product of n and (n+1) times the previous term, plus the initial value.

C) An = 1 + (-1)^n An-2 + A0, with A1 = 1 + A0 and A2 = 2 + A0
This sequence starts with a given value A0 and the first two terms are defined explicitly. Each subsequent term alternates between adding and subtracting the term two positions prior, plus the initial value.

D) An = n^2 An-1 + Ao, with A1 = A0
This sequence starts with a given value A0 and each subsequent term is the square of n times the previous term, plus the initial value.

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The length of the curve L is [tex]\int\limits^3_{-2} {\sqrt{1+(15x^4+15)^2} } \, dx[/tex] where a = -2, b= 3 and f'(x) =  [tex]15x^4[/tex] + 15.

To find the length of the curve defined by y = [tex]3x^5[/tex] + 15x from the point (-2, -126) to the point (3, 774), you'd actually need to compute the arc length using the formula:
L = [tex]\int\limits^b_a {\sqrt{(1+(f'(x)^2)} } \, dx[/tex]
First, find the derivative of the function, f'(x):
f'(x) = d([tex]3x^5[/tex] + 15x)/dx = [tex]15x^4[/tex] + 15
Now, substitute f'(x) into the arc length formula:
L = [tex]\int\limits^b_a {\sqrt{(1+(15x^4+15)^2)} } \, dx[/tex]
Here, the points given are (-2, -126) and (3, 774). Therefore, the limits of integration are:
a = -2
b = 3
So the final integral to compute the length of the curve is:
L = [tex]\int\limits^3_{-2} {\sqrt{1+(15x^4+15)^2} } \, dx[/tex]

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The length of the curve L is [tex]\int\limits^3_{-2} {\sqrt{1+(15x^4+15)^2} } \, dx[/tex] where a = -2, b= 3 and f'(x) =  [tex]15x^4[/tex] + 15.

To find the length of the curve defined by y = [tex]3x^5[/tex] + 15x from the point (-2, -126) to the point (3, 774), you'd actually need to compute the arc length using the formula:
L = [tex]\int\limits^b_a {\sqrt{(1+(f'(x)^2)} } \, dx[/tex]
First, find the derivative of the function, f'(x):
f'(x) = d([tex]3x^5[/tex] + 15x)/dx = [tex]15x^4[/tex] + 15
Now, substitute f'(x) into the arc length formula:
L = [tex]\int\limits^b_a {\sqrt{(1+(15x^4+15)^2)} } \, dx[/tex]
Here, the points given are (-2, -126) and (3, 774). Therefore, the limits of integration are:
a = -2
b = 3
So the final integral to compute the length of the curve is:
L = [tex]\int\limits^3_{-2} {\sqrt{1+(15x^4+15)^2} } \, dx[/tex]

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Bortle Manufacturing Group needs to produce 47,750 units per month to meet their sales forecast and maintain the desired inventory level, based on the given information.

To estimate the production level for the coming year Bortle Manufacturing Group needs to consider the sales forecast and the company policy regarding inventory levels.

The sales forecast for the coming year is 576,000 units, and the company policy is to maintain a finished goods inventory of one and one-half month's unit sales.
Based on this information, we can calculate the desired finished goods inventory level as follows:
Desired inventory level = (1.5 x monthly unit sales)
= (1.5 x 576,000 units / 12 months)
= 72,000 units
Next, we need to calculate the total units needed to meet the sales forecast and maintain the desired inventory level:
Total units needed = sales forecast + desired inventory level - beginning inventory
= 576,000 units + 72,000 units - 75,000 units
= 573,000 units
Since sales occur uniformly throughout the year the production level required to meet these objectives would be:
Production level = total units needed / 12 months
= 573,000 units / 12 months
= 47,750 units per month
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The integral along the actual process path will not accurately represent the maximum possible entropy change for the system.

To determine the entropy change for an irreversible process between states 1 and 2, the integral ∫1 2 δq/t should be performed along an imaginary reversible path. This is because entropy is a state function and is independent of the path taken to reach a particular state. Therefore, the entropy change between two states will be the same regardless of whether the process is reversible or irreversible.

However, performing the integral along an imaginary reversible path will give a more accurate measure of the entropy change as it represents the maximum possible work that could have been obtained from the system. In contrast, an irreversible process will always result in a lower amount of work being obtained due to losses from friction, heat transfer to the surroundings, and other factors.

Therefore, performing the integral along the actual process path will not accurately represent the maximum possible entropy change for the system.

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There will be 2,600 prize-winning opportunities in a year for all 200 members combined.

Assuming that the 200 Club follows the rules and conducts all the draws specified, there will be a total of 13 prize-winning opportunities in a year for each member.

The breakdown of the prize-winning opportunities is as follows:

Monthly draws: There are 12 monthly draws in a year, and each draw has 3 prizes - a first prize of £15, a second prize of £5, and a main prize of £20. Therefore, there are 36 prize-winning opportunities in total for the monthly draws.

Annual Grand draw: There is one annual grand draw, which has 2 prizes - a first prize of £50 and a second prize of £30.

So, for each member, there will be 13 prize-winning opportunities in a year - 12 monthly draws and 1 annual grand draw. However, it is important to note that each member can only win one prize per monthly draw, and their card remains valid for the entire year even if they have won a prize already.

Therefore, in total, there will be 2,600 prize-winning opportunities in a year for all 200 members combined (13 prize-winning opportunities per member multiplied by 200 members).

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the volume percent of ethylene glycol in the solution is 30.25%.

Why is it?

To calculate the volume percent of ethylene glycol in the solution, we need to know the volume of ethylene glycol and the total volume of the solution.

Given:

Volume of ethylene glycol = 357 ml

Total volume of solution = 1.18 × 10²3 ml

The volume percent of ethylene glycol is calculated as:

Volume percent = (volume of ethylene glycol / total volume of solution) x 100%

Volume percent = (357 ml / 1.18 × 10²3 ml) x 100%

Volume percent = 30.25%

Therefore, the volume percent of ethylene glycol in the solution is 30.25%.

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The P-value for the given test statistic, z0 = -2.33, in a one-tailed hypothesis test with H0: µ = 11 and H1: µ < 11 is approximately 0.01.


1. Identify the null hypothesis (H0) and alternative hypothesis (H1). In this case, H0: µ = 11 and H1: µ < 11.

2. Determine the test statistic. Here, z0 = -2.33.

3. Since H1: µ < 11, we are performing a one-tailed test (left-tailed).

4. Look up the corresponding P-value for z0 = -2.33 using a standard normal (Z) table or an online calculator.

5. In a standard normal table, find the row and column corresponding to -2.3 and 0.03, respectively. The intersection gives the value 0.0099, which is approximately 0.01.

6. The P-value is about 0.01, which represents the probability of observing a test statistic as extreme or more extreme than z0 = -2.33 under the null hypothesis.

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The number of years it will  take the schools to have the same enrollment is 4 years.

We are given that;

The enrollment at high school R has been increasing by 20 students per year.

Currently high school R has 200 students attending.

High school T currently has 400 students, but it’s enrollment is decreasing in size by an average of 30 students per year.

Let x be the number of years from now, and y be the enrollment of the schools. Then we have:

y=200+20x

for high school R, and

y=400−30x

for high school T. To find when the schools have the same enrollment, we set the two equations equal to each other and solve for x:

200+20x=400−30x

Adding 30x to both sides, we get:

50x=200

Dividing both sides by 50, we get:

x=4

At that time, they will both have y = 200 + 20(4) = 280 students.

Therefore, by the linear equation the answer will be 4 years.

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The functions $y =[tex]e^{-4x}[/tex]$ and $y = [tex]e^{2x}[/tex] $ are solutions to the differential equation $y'' + 2y' - 8y = 0$.

To see if the function $y = e^{rx}$ is a solution to the differential equation $y'' + 2y' - 8y = 0$, we substitute it in place of $y$ and its derivatives:

y=[tex]e^{rx}[/tex]

y' = [tex]re^{rx}[/tex]

y" = [tex]r^{2} e^{rx}[/tex]

Substituting these expressions into the differential equation, we get:

[tex]r^{2} e^{rx} + 2re^{rx} - 8e^{rx} = 0[/tex]

Dividing both sides by $ [tex]$e^{rx}$[/tex] $, we get:

[tex]r^{2} + 2r - 8 = 0[/tex]

This is a quadratic equation in $r$. Solving for $r$, we get:

r = -4,2

Therefore, the functions $y =[tex]e^{-4x}[/tex]$ and $y = [tex]e^{2x}[/tex] $ are solutions to the differential equation $y'' + 2y' - 8y = 0$.

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The average slope of f(x) on the interval [-6,4] is equal to f'(3.5) = -12(3.5) = -42.

The Mean Value Theorem (MVT) for a function f(x) on the interval [a,b] states that there exists a point c in (a,b) such that f'(c) = (f(b) - f(a))/(b - a).

In this problem, we are asked to find the average slope of the function f(x) = 3 - 6x² on the interval [-6,4]. The average slope is:

(f(4) - f(-6))/(4 - (-6)) = (3 - 6(4)² - (3 - 6(-6)²))/(4 + 6) = -42

So, we need to find a point c in (-6,4) such that f'(c) = -42. The derivative of f(x) is:

f'(x) = -12x

Setting f'(c) = -42, we get:

-12c = -42

c = 3.5

Therefore, the point c = 3.5 satisfies the conditions of the Mean Value Theorem, and the average slope of f(x) on the interval [-6,4] is equal to f'(3.5) = -12(3.5) = -42.

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Answer:

1,837

Step-by-step explanation:

log₂(7) + log₂(8) is equal to log₂(56).

Logarithmic is a mathematical concept that is used to describe the relationship between a number and its exponent. In particular, a logarithm is the power to which a base must be raised to produce a given number. For example, if we have a base of 2 and a number of 8, the logarithm (base 2) of 8 is 3, since 2 raised to the power of 3 equals 8.

Logarithmic functions are commonly used in mathematics, science, and engineering to describe exponential growth and decay, as well as to solve various types of equations. They are particularly useful in dealing with large numbers, as logarithms allow us to express very large or very small numbers in a more manageable way.

The logarithmic function is typically denoted as log(base a) x, where a is the base and x is the number whose logarithm is being taken. There are several different bases that are commonly used, including base 10 (common logarithm), base e (natural logarithm), and base 2 (binary logarithm). The properties of logarithmic functions, including rules for combining and simplifying logarithmic expressions, are well-defined and widely used in mathematics and other fields.

We can use the logarithmic rule that states that the sum of the logarithms of two numbers is equal to the logarithm of the product of the two numbers. That is,

log₂(7) + log₂(8) = log₂(7 × 8)

Now we can simplify the product of 7 and 8 to get:

log₂(7) + log₂(8) = log₂(56)

Therefore, log₂(7) + log₂(8) is equal to log₂(56).

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The limit of the function is Lim (x y) - (2,0) [1-cos y / 2xy] is 0.

Evaluate the given limit using the L'Hôpital's Rule, as it is a useful method when dealing with indeterminate forms like 0/0.

The given limit is:

lim (x y) - (2,0) [(1 - cos y) / (2xy)]

Step 1 :- First, we need to check if the limit is in indeterminate form:

As y approaches 0:
1 - cos y approaches 1 - cos(0) = 1 - 1 = 0
2xy approaches 2 * 0 * 0 = 0

So, the limit is in the form 0/0, which is indeterminate.

Step 2:-Now apply L'Hôpital's Rule:

We need to find the derivative of the numerator and the derivative of the denominator with respect to y.

d(1 - cos y)/dy = sin y
d(2xy)/dy = 2x (since x is treated as a constant)

Now, we'll find the limit of the ratio of the derivatives:

Lim (x y) - (2,0) [1-cos y / 2xy]

Step 3:- Substitute the value of the limit, as y approaches 0, sin y approaches sin (0) = 0.

Thus, the limit is:

0 / (2x) = 0

So, the answer is:

Lim (x y) - (2,0) [(1 - cos y) / (2xy)] = 0

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Let D be the vertex of the cube on face ABC.

Since the opposite vertex of the cube is at O, we have OD = 1.

Let the side length of the cube be x.

Consider triangle AOB.

AB² = AO² + OB² = 1 + 1 = 2

Similarly, find that BC² = AC² = 2.

Since ABC is a right triangle with angles A, B, and C being 90° -

sin A = BC / AB = √2 / 2

sin B = AC / AB = √2 / 2

sin C = BC / AC = 1

Consider tetrahedron ABCO. Since AOB, AOC, and BOC are right angles -

∠AOCB = π - ∠AOC - ∠BOC = π/2

∠AOBC = π - ∠AOB - ∠BOC = π/2

∠ABCO = π - ∠AOC - ∠AOB = π/2

So triangles AOC, AOB, and BOC are all right triangles with hypotenuse 1 and angles A, B, and C, respectively.

Using the sine rule -

sin AOC = AO / OC = 1

sin AOB = sin BOC = BO / OC = 1

Therefore, the areas of triangles AOC, AOB, and BOC are -

Area(AOC) = (1/2) × AO × OC × sin AOC = (1/2) × 1 × 1 × 1 = 1/2

Area(AOB) = Area(BOC) = (1/2) × BO × OC × sin AOB = (1/2) × 1 × 1 × 1 = 1/2

Now, consider triangle AOD.

sin AOD = sin(180° - AOB - AOC) = sin(BOC) = √2 / 2

Using the sine rule -

AD / sin AOD = OD / sin OAD

AD / (√2 / 2) = 1 / x

AD = (√2 / 2) * (1 / x)

The area of triangle AOD is -

Area(AOD) = (1/2) × AD × OD × sin AOD = (1/2) × (√2 / 2) × (1 / x) × 1 × (√2 / 2) = 1 / (2x²)

Now, consider the tetrahedron ABCO.

The volume of the tetrahedron is -

V = (1/3) × Area(ABC) × OD = (1/3) × (√3 / 4) × 1 = √3 / 12

The volume of the cube is -

V = x³

Since the cube is inscribed in the tetrahedron -

√3 / 12 = x³

So, now there is -

x = 1/3

Therefore, the side length of the cube is 1/3, as required.

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In tetrahedron ABCO, angle AOB = angle AOC = angle BOC = 90^\circ. A cube is inscribed in the tetrahedron so that one of its vertices is at O, and the opposite vertex lies on face ABC. Let OA = 1, OB = 1, OC = 1. Show that the side length of the cube is 1/3.

Answer:22

Step-by-step explanation:

First you put

40/100

and that makes

11/22

For an exponential function of the form y = ab^x, where a > 0, the value of b determines whether the function is increasing or decreasing.

If b > 1, then the function is increasing, because as x increases, the value of b^x also increases, causing y to increase.

If 0 < b < 1, then the function is decreasing, because as x increases, the value of b^x decreases, causing y to decrease.

If b = 1, then the function is constant, because b^x = 1 for all values of x.

Therefore, to find values of b that result in a decreasing function, we need to find values of b such that 0 < b < 1.

The missing number is 7/13.

We have the Sequence,

2/3, 4/7, x, 11/21, 16/31

As, the sequence in Numerator are +2, +3, +4, +5,

and, the sequence of denominator are 4, 6, 8 and 10.

Then, the numerator of missing fraction is

= 4 +3 = 7

and, denominator = 7 + 6 =13

Thus, the required number is 7/13.

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Answer:

Option 2 is better (pls give brainliest lol!)

Step-by-step explanation:

To determine which is a better deal, we can compare the cost per mango for each option.

Option 1: $5.00 for 4 mangoes

Cost per mango = $5.00/4 = $1.25

Option 2: $6.00 for 5 mangoes

Cost per mango = $6.00/5 = $1.20

Based on the calculations, we can see that Option 2 has a lower cost per mango, making it the better deal. Therefore, buying 5 mangoes for $6.00 is a better deal than buying 4 mangoes for $5.00.

As the equation is not in the standard form of any conic section (ellipse, parabola, circle, or hyperbola), we can conclude that it's a limaçon. The correct answer is E.

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The coefficient of [tex](x - 1)^k[/tex] in the Taylor series for f(x) centered at 1 is (-1/2) for k > 1 and [tex]f^{(k)}(1) = -k!/(2^k)[/tex] for k > 1

What is coefficient?

In mathematics, a coefficient is a numerical or constant factor that is applied to a variable or term. Coefficients are used in various mathematical contexts, including algebra, calculus, and statistics.

Since the first derivative of f(x) is [tex]f'(x) = -1/(x^2 * \sqrt{(x^2 - 1)})[/tex], we have f'(1) = -1/0, which is undefined. Hence, we cannot use the Taylor series formula for f(x) centered at 1 directly.

However, we are given that [tex]f^{(k)}(1) = -k!/(2^k)[/tex] for k > 1. Using this information, we can write the Taylor series formula for f(x) centered at 1 as:

[tex]f(x) = f(1) + f'(1)(x - 1) + (1/2!)f''(1)(x - 1)^2[/tex][tex]+$\sum_{k=2}^{\infty} \frac{1}{k!}f^{(k)}(1)(x-1)^k$[/tex]

Substituting f(1) = 1/2 and f'(1) = -1/2, we get:

[tex]$f(x) = \frac{1}{2} - \frac{1}{2}(x-1) + \frac{1}{2!} \left(-\frac{2}{2^2}\right) (x-1)^2 + \sum_{k=2}^{\infty} \frac{1}{k!} \left(-\frac{k!}{2^k}\right) (x-1)^k$[/tex]

Simplifying the expression, we get:

[tex]$f(x) = \frac{1}{2} - \frac{1}{2}(x-1) - \frac{1}{4}(x-1)^2 + \sum_{k=2}^{\infty} \left(-\frac{1}{2}\right)(x-1)^k$[/tex]

Hence, the coefficient of [tex](x - 1)^k[/tex] in the Taylor series for f(x) centered at 1 is (-1/2) for k > 1.

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From the given information, we know that {an} is a sequence of positive terms, so all of its terms are greater than 0. We also know that sn = m∑ ak, which means that sn is a sum of a finite number of positive terms.

Now, let's look at the given limit: lim an+1 = 0 as n approaches infinity. This tells us that the terms of {an} must approach 0 as n approaches infinity since the limit of an+1 is dependent on the limit of an. Therefore, we can conclude that {an} is a decreasing sequence of positive terms. Using this information, we can determine the following:- ak must converge: Since {an} is decreasing and positive, we know that the terms of {ak} are also decreasing and positive. Therefore, {ak} must converge by the Monotone Convergence Theorem. - ak must converge to 0: Since {an} approaches 0 as n approaches infinity, we know that the terms of {ak} must also approach 0. Therefore, {ak} must converge to 0.
- {sn} must be bounded: Since {ak} converges to 0, we know that there exists some N such that ak < 1 for all n > N. Therefore, sn < m(N-1) + m for all n > N. This shows that {sn} is bounded above by some constant.
- {sn} is monotonic: Since {an} is decreasing and positive, we know that {ak} is also decreasing and positive. Therefore, sn+1 = sn + ak+1 < sn, which shows that {sn} is a decreasing sequence. - limn→∞ sn does not exist: Since {an} approaches 0 as n approaches infinity, we know that {sn} approaches a finite limit if and only if {ak} approaches a nonzero limit. However, we know that {ak} approaches 0, so {sn} does not approach a finite
Therefore, the correct answers
- ak must converge
- ak must converge to 0
- {sn} must be bounded
- {sn} is monotonic
- limn→∞ sn does not exist

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The transformation of the function [tex]f(x)=x^2[/tex] [tex]g( x)=(x+4)^2[/tex]−1 involves a horizontal translation 4 units to the left.

Therefore, the answer is B. a horizontal translation 4 units to the left.

We can see this by comparing the two functions. The function g(x) is the same as f(x) except that the argument of the squared term has been replaced by (x+4). This means that the graph of g(x) is the same as the graph of f(x), but shifted horizontally 4 units to the left.

A function is a mathematical relationship between two variables, typically denoted as f(x). A function takes an input value x and produces an output value y, according to a specific rule or equation.

The input value x is called the independent variable, while the output value y is called the dependent variable. The rule or equation that determines how the input value is transformed into the output value is called the function's formula or expression

Therefore, the answer is B. a horizontal translation 4 units to the left.

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The n(l ∪ m) = 950. This can also be said as the size of the union of sets l and m is 950.

In the question, we have

n(l) = 750, n(m) = 230 and n(l ∩ m) = 30,

To find n(l ∪ m), we need to add the number of elements in both sets, but since they have some overlap n(l ∩ m), we need to subtract that overlap to avoid counting those elements twice.

n(l ∪ m) = n(l) + n(m) - n(l ∩ m)

Substituting the given values, we get:

n(l ∪ m) = 750 + 230 - 30
n(l ∪ m) = 950

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The length of line AX is 3p/4q.

The length of side AY is  9p²/4q + 3p/4.

The length of line AX is calculated as follows;

From the given figure, we can apply the principle of congruent sides of the parallellogram.

AD/DC = CX/AX

8q/6p = 1/AX

AX = 6p/8q

AX = 3p/4q

The length of side AY is calculated by applying the following formula as shown below.

Apply similar principle of congruent sides;

AX/CX = AY/CY

3p/4q / 1 = AY/(3p + q)

AY = 3p/4q(3p + q)

AY = 9p²/4q + 3p/4

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Answer:

perimeter= 96feet

area= 470 feet ^2

Step-by-step explanation:

to find the perimeter u add all the sides together

top missing side= 10feet

right missing side= 19feet

perimeter= 28+20+10+9+10+19

perimeter= 96 feet

area= 20×19=380

9×10=90

area=380+90

area=470 feet^2

Answer: Top box : 10 Ft. , Side box: 21 Ft. , Area: 510 Ft^2, Perimeter: 98 Ft.

Step-by-step explanation:

- Think about it as two shapes. A smaller rectangle that the sheep is in and a larger one with the rest of the pen. Doing this visually will help.

Top box:

20-10 = 10

- We minus 10 feet from 200 because we are dealing with the 'smaller' shape first, to find the length of its missing side we must subtract the known lengths; we removed the excess.

Side box:

28-9=21

- We do this because 28 Ft was a whole length from end to end when we only need the bigger shape, hence we remove the excess which is 9 Ft.

Area:

-Now we know all our lengths, deal with the two self-allocated 'shapes' as you would normally.

10 x 9 = 90. (Smaller shape.)

20 x 21 = 420. (Larger shape.)

- Then we add them to find the area of the WHOLE shape combined.

90 + 420 = 410 FT²

Perimeter:

- Once again, we know all our lengths and simply add them all together.

10 + 28 + 20 + 21 + 10 + 9 = 98 FT

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Answer:

10,11

Step-by-step explanation:

Givne set: {7, 8 , 9 , 10 , 11}

To solve the inequality, isolate 'h'.

        2h - 3 > 15

Add 3 to both sides,

     2h - 3 + 3 > 15 + 3

               2h  > 18

Divide both sides by 2,

                [tex]\sf \dfrac{2h}{2} > \dfrac{18}{2}[/tex]

                 h > 9

h = {10 , 11}

For Problem 9, the characteristic equation is r² + 3 = 0, which has roots r = +/- i*sqrt(3).

Since this is a nonhomogeneous equation with a constant on the right-hand side, we guess a particular solution of the form y_p = A, where A is a constant. Plugging this into the differential equation, we get A = -3, so our particular solution is y_p = -3.

For Problem 10, the characteristic equation is r² + 2r - 1 = 0, which has roots r = (-2 +/- sqrt(8))/2 = -1 +/- sqrt(2).

Again, this is a nonhomogeneous equation with a constant on the right-hand side, so we guess a particular solution of the form y_p = B, where B is a constant. Plugging this into the differential equation, we get B = 10/3, so our particular solution is y_p = 10/3.

For Problem 11, the characteristic equation is r^2 + 1 = 0, which has roots r = +/- i.

This is a nonhomogeneous equation with a constant on the right-hand side, so we guess a particular solution of the form y_p = C, where C is a constant. Plugging this into the differential equation, we get C = 2, so our particular solution is y_p = 2.

For Problem 12, this is a first-order differential equation, so we can use the method of integrating factors.

The integrating factor is e^int(1/2, dx) = e^(x^2/4), so we multiply both sides of the equation by e^(x^2/4) to get (e^(x^2/4) x)' = 312 e^(x^2/4). Integrating both sides with respect to x, we get e^(x^2/4) x = 312/2 int(e^(x^2/4), dx) = 156 e^(x^2/4) + C, where C is a constant of integration. Solving for x, we get x = 156 e^(-x^2/4) + Ce^(-x^2/4). This is our particular solution.

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The quotient written in scientific notation is the one in the first option:

3.125*10⁻⁹

The first thing we need to do, is simplify the denominator.

It is:

(1×10⁻³) - (4×10⁻⁵)

We can write the second first one as:

(100×10⁻⁵) - (4×10⁻⁵)

Now that the exponents are equal, we can take the diference to get:

(100×10⁻⁵) - (4×10⁻⁵) = 96×10⁻⁵

Now the quotient is:

(3×10⁻¹²)/(96×10⁻⁵) = (3/96)×(×10⁻¹²/×10⁻⁵) = 0.03125*10⁻¹²⁺⁵

                                                                  = 0.03125*10⁻⁷

                                                                  = 3.125*10⁻⁹

That is the correct answer.

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