What’s the answer I need help asap?

The solution of the system of equations  -10x - 9y = 10 and 8x + 9y = 10 is x = 10 and y = -3.33

From the question, we have the following parameters that can be used in our computation:

-10x9y = 10

8x +9y = 10

Express properly

So, we have

-10x - 9y = 10

8x + 9y = 10

When the above equations are added to one another, we have

2x  = 20

This means that

x = 10

Nexy, we have

-10(2) - 9y = 10

This means that

-9y = 30

S,o we have

y = -3.33

Hence, the soltuion is x = 10 and y = -3.33

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To determine which offer will provide a greater total income after 5 years, we need to calculate the total amount of income earned from each offer over the 5-year period.

For Offer A:
Annual interest rate = 5%
Principal amount = $10,000
Time period = 5 years

Total amount earned = Principal x (1 + Annual interest rate)^Time period
= $10,000 x (1 + 0.05)^5
= $12,762.82

Total income earned = Total amount earned - Principal
= $12,762.82 - $10,000
= $2,762.82

For Offer B:
Annual interest rate = 4%
Principal amount = $12,000
Time period = 5 years

Total amount earned = Principal x (1 + Annual interest rate)^Time period
= $12,000 x (1 + 0.04)^5
= $14,612.52

Total income earned = Total amount earned - Principal
= $14,612.52 - $12,000
= $2,612.52

Therefore, Offer B will provide a greater total income after 5 years, with a total income earned of $2,612.52, compared to Offer A's total income earned of $2,762.82.

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The discontinuity of the given function is at (−2, 1) and zero at (−3, 0).

The given function is:

f(x) =   [tex]\frac{x^{2} + 5x + 6}{x + 2}[/tex]

We will factorize the numerator and then reduce this function.

= [tex]\frac{x^{2} + 2x + 3x + 6}{x + 2}[/tex]

=  [tex]\frac{x(x + 2) +3 (x + 2)}{x + 2}[/tex]

= [tex]\frac{(x + 2) (x + 3)}{x + 2}[/tex]

If we take the value of x as -2, both the numerator and denominator will be 0. Note that for x = -2, both the numerator and denominator will be zero. When both the numerator and denominator of a rational function become zero for a given value of x we get a discontinuity at that point. which means there is a hole at x = -2.

Now, when we reduce this function by canceling the common factor from the numerator and denominator we get the expression f(x) = x + 3.  If we use the value of x = -2 in the previous expression we get;

f(x) = x + 3 =  = -2 + 3

f(x) = 1

Therefore, there is a discontinuity (hole) at (-2, 1).

If x = -3, the value of the function is equal to zero. This means x = -3 is a zero or root of the function.

Therefore, (-3, 0) is a zero of the function.

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Answer:

  [tex]A_n=\left[\begin{array}{cc}1&n\\0&1\end{array}\right][/tex]

Step-by-step explanation:

You want the general formula for the n-th power of matrix A, where ...

  [tex]A=\left[\begin{array}{cc}1&1\\0&1\end{array}\right][/tex]

The sequence of powers A, A², A³, A⁴ is shown in the attachment. It strongly suggests that the upper right element of the matrix is equal to the power.

The formula for An is ...

  [tex]\boxed{A_n=\left[\begin{array}{cc}1&n\\0&1\end{array}\right]}[/tex]

H. 0.270 is equal in value to 27% in the given case. Option 3 is correct

A percentage is a way of expressing a number as a fraction of 100. The symbol for percentage is the percent sign (%).

To convert a percentage to a decimal, we divide the percentage by 100. For example, 50% is equal to 0.50 as a decimal.

To convert a percentage to a decimal, we divide the percentage by 100.

So to convert 27% to a decimal, we divide 27 by 100:

27/100 = 0.27

Therefore, 27% is equal to 0.27 as a decimal.

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Answer: The correct answer is A

i have no clue if this is correct if it is goodluck lol

a) The function are described as follows:

y= sin( x) - odd

y= cos (x) - even

y = tan (  x) - neither even or odd

b) y= sin (x) - symmetric about the origin

 y  = cos (x) - symmetric about tthe y-axis

y = tan (x) - does not have a point or line of symmetry

A) The following definitions can be used to  determine if a function is even or odd ...

If f(-x  ) = f (x ) for every x in the domain, the function is even.

If f(-x) =  -  f(x) for every x in the domain, t e function is odd

Using these definitions  , we can examine the following functions

y =  sin (x)

Because sin   (-x) = -sin(x) for any angle x, the function is odd.

y = cos  (x)

Cos  (-x) = cos (x) for any angle x, hence the function is even.

y = tan( x)

Tan(-x) = -tan(x) for every angle x.   Only if x does not equal ( n + 0.5), where n   is an integer, is the function even or odd.

B)

The line or  point of symmetry of a function is detrmined by whether it is even or odd...

The y -axis (x=0) is the line of symmetry for an even function.

The origin (0,0) is the point of symmetry for an odd function.

y = sin(x)     his is an odd function, so the point of symmetry is the origin (0,0).

y = cos(x) his is an even function, so the line of symmetry is the y-axis (x=0).

y = tan(x)

This is neither even nor odd, so it does not have a line or point of symmetry.

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The eigenvalues and eigenvectors of [A] are:

λ1 = 5, v1 = [2, -3, 1]

λ2 = -1,

(a) The matrix [A] is invertible if its determinant is non-zero. Therefore, we can compute the determinant of [A] as follows:

det([A]) = x * (33 - 51) - 15 * (23 - 50) + 7 * (21 - 30)

= x * (-2) - 15 * 6 + 7 * 2

= -2x - 88

[Note: we used the formula for the determinant of a 3 x 3 matrix in terms of its elements.]

Since [A] is not invertible, its determinant must be zero. Therefore, we can set the determinant equal to zero and solve for x:

-2x - 88 = 0

x = -44

Therefore, x = -44 if [A] is not invertible.

(b) To find the eigenvalues and eigenvectors of [A], we need to solve the characteristic equation:

det([A] - λ[I]) = 0

where λ is the eigenvalue and I is the identity matrix of the same size as [A].

We have:

[A] - λ[I] = x-λ 15 7

2 x-λ 5

0 1 x-λ

Therefore, the characteristic equation is:

det([A] - λ[I]) = (x-λ) [(x-λ)(x-λ) - 51] - 15 [2*(x-λ) - 01] + 7 [21 - 5*0] = 0

Simplifying this equation, we get:

(x-λ)^3 - 5(x-λ) - 30 = 0

This is a cubic equation that can be solved using various methods, such as using the cubic formula or using numerical methods. The solutions to this equation are the eigenvalues of [A].

By solving the equation, we find the following three eigenvalues:

λ1 = 5

λ2 = -1

λ3 = 2

To find the eigenvectors corresponding to each eigenvalue, we need to solve the system of linear equations:

([A] - λ[I])v = 0

where v is the eigenvector corresponding to the eigenvalue λ. We can write this system of equations for each eigenvalue and solve for the corresponding eigenvector.

For λ1 = 5, we have:

[A]v = 5v

(x-5)v1 + 15v2 + 7v3 = 0

2v1 + (x-5)v2 + 5v3 = 0

v2 + 3v3 = 0

Using the last equation, we can choose v3 = 1 and v2 = -3. Substituting these values in the second equation, we get v1 = 2. Therefore, the eigenvector corresponding to λ1 = 5 is:

v1 = 2

v2 = -3

v3 = 1

Similarly, we can solve for the eigenvectors corresponding to λ2 = -1 and λ3 = 2. The final eigenvectors are:

For λ2 = -1:

v1 = 1

v2 = 0

v3 = -1

For λ3 = 2:

v1 = -1

v2 = 1

v3 = -1

Therefore, the eigenvalues and eigenvectors of [A] are:

λ1 = 5, v1 = [2, -3, 1]

λ2 = -1,

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Vector AT's coordinates in the provided base are (8/7, 12/7).

A vector is a quantity that describes not only the magnitude of an object but also its movement or position with respect to another point or object. It is sometimes referred to as a Euclidean vector, a geometric vector, or a spatial vector.

To find the coordinates of the vector AT in the given base, we first need to find the coordinates of the vectors AB and AC. Let's start by finding the coordinates of vector AB.

Since we know the coordinates of points A and B, we can find the vector AB by subtracting the coordinates of point A from the coordinates of point B:

AB = B - A = (-1, 4) - (0, 0) = (-1, 4)

Similarly, we can find the coordinates of vector AC:

AC = C - A = (5/8, 0) - (0, 0) = (5/8, 0)

Now, let's find the coordinates of the vector AT. To do this, we first need to find the coordinates of point T. We can use the method of intersecting lines to find the coordinates of T.

The equation of the line BB' can be written as:

BB': (y - 4x) = 4(4 - x)

Simplifying this equation, we get:

BB': y = -4x + 20

Similarly, the equation of line CC' can be written as:

CC': (y - 5x/3) = 3x/5

Simplifying this equation, we get:

CC': y = (3/5)x + 5/3

To find the coordinates of point T, we need to solve the system of equations formed by the two equations above. Solving for x and y, we get:

x = 8/7

y = 12/7

Therefore, the coordinates of point T are (8/7, 12/7). Now, to find the coordinates of vector AT, we can use the following formula:

AT = T - A

Substituting the coordinates of A and T, we get:

AT = (8/7, 12/7) - (0, 0) = (8/7, 12/7)

Therefore, the coordinates of vector AT in the given base are (8/7, 12/7).

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There are 130 union members working for the company

From the question, we have the following parameters that can be used in our computation:

Ratio of union members to non-union members working for a company is 5 to 8

This means that

Union members : Non-union members = 5 : 8

There are 338 employees in the company

So, we have

Union members = 5/(5 + 8) * Number of employers

Substitute the known values in the above equation, so, we have the following representation

Union members = 5/(5 + 8) * 338

Evaluate

Union members = 130

Hence, the union members are 130

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The Intermediate Value Theorem concludes that for a continuous function on a closed interval, if there are two points in the interval such that the function takes on two different values, then there must be at least one point in the interval where the function takes on every value between those two values.

Assuming its assumptions are met, the Intermediate Value Theorem (IVT) concludes that:

If a continuous function, f(x), is defined on a closed interval [a, b], and k is any value between f(a) and f(b), then there exists at least one value c in the interval (a, b) such that f(c) = k.

In other words, if a function is continuous on a closed interval and k is a value between the function's values at the endpoints of the interval, the function must take on the value k at least once within that interval. This theorem is particularly useful in determining the existence of roots or zeroes for a function in a specified interval.

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a² + b² = c² is true for the first triangle but false for the second triangle.

In Mathematics and Geometry, Pythagorean's theorem is modeled or represented by the following mathematical equation (formula):

a² + b² = c²

Where:

a, b, and c represents the length of sides or side lengths of any right-angled triangle.

By substituting the given parameters into the formula for Pythagorean's theorem, we have the following;

a² + b² = c²

4² + 2² = c²

c² = 16 + 4

c = √20 or 2√5 units.

a² + b² = c²

5² + 2² = (√45)²

45 = 25 + 9

45 = 34 (False).

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There is only one point of inflection. Answer: d) 3

The second derivative of the function f(x) is:

[tex]f''(x) = 126x^5 + 40x^3 - 5[/tex]

The second derivative of a function is the derivative of its first derivative. It is denoted represents the rate of change of the slope of the function.

In other words, if the first derivative f'(x) represents the slope of the function, the second derivative f''(x) represents the rate at which the slope is changing.

The points of inflection occur where the concavity changes, that is where the second derivative changes sign or equals zero.

Setting f''(x) = 0, we have:

[tex]126x^5 + 40x^3 - 5 = 0[/tex]

This equation has only one real solution, which can be found numerically:

x ≈ 0.357

Therefore, there is only one point of inflection. Answer: d) 3

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The simplified form of sin x / (1-cos x) is not in the provided options. The final form is  (1 + cos x)^(1/2).

To find the simplified form of sin x / (1-cos x), we will use the following identity:

sin^2(x) + cos^2(x) = 1
Now, we can rewrite sin^2(x) as (1 - cos^2(x)).

Then, we will factor in the numerator:
sin x / (1 - cos x) = (1 - cos^2(x))^(1/2) / (1 - cos x)
Next, we factor the denominator by using the difference of squares formula:
(1 - cos^2(x))^(1/2) / (1 - cos x) = [(1 + cos x)(1 - cos x)]^(1/2) / (1 - cos x)
Now, we can simplify by canceling out the common factor (1 - cos x):
[(1 + cos x)(1 - cos x)]^(1/2) / (1 - cos x) = (1 + cos x)^(1/2)

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Answer: $13.39

Step-by-step explanation:

first, you take 25% off 21, by multiplying 21*.25 which is 5.25

next, subtract 5.25 from 21, which gets you 15.75

next, add the 15% off coupon, by multiplying 15.75*.15 which is 2.3625

last, subtract 2.3625 from 15.75, which gets you 13.3875, or $13.39 rounded

the answer to you math question is letter D

The number of circles he will draw is 30 circles.

The branch of mathematics which involves the study and manipulation of mathematical symbols is known as Algebra. This field comprises the use of characters and signs to symbolize unknown values and their linkages.

How to solve:

On one card, we have 14 triangles and 6 circles

Therefore, if we have 70 triangles,

number of cards= 70/14

= 5 card

Thus, Total number of circles is 6 x 5 = 30 circles

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Answer:

The probability is 1/6.

Step-by-step explanation:

Let's break down the problem into two separate events: rolling the number cube and tossing the coin.Event 1: Rolling the number cube

The number cube has 6 faces, numbered 1 to 6. Since it is fair, each face has an equal probability of landing face up.The favorable outcomes for rolling a number less than 3 are 1 and 2, as they are the only numbers that satisfy the condition "less than 3".So, the probability of rolling a number less than 3 is 2 out of 6, or 2/6, which can be simplified to 1/3.Event 2: Tossing the coin

The coin has 2 sides, heads and tails. Since it is fair, each side has an equal probability of landing face up.The favorable outcome for tossing a coin and getting heads is 1, as it is the only side that represents "heads".So, the probability of getting heads on the coin toss is 1 out of 2, or 1/2.Now, to find the probability of both events happening together (rolling a number less than 3 and getting heads on the coin toss), we multiply the probabilities of the two events:Probability of rolling a number less than 3 AND getting heads on the coin toss = Probability of rolling a number less than 3 * Probability of getting heads on the coin toss= 1/3 * 1/2= 1/6So, the probability that the number rolled is less than 3 and the coin toss is heads is 1/6.

There is weak evidence supporting the claim that the true mean is below the desired specification of 57 Pa.

Based on the given information, the p-value obtained from the hypothesis test is 0.095. The p-value represents the probability of observing a test statistic as extreme or more extreme than the one obtained, assuming the null hypothesis (i.e., the true mean is not below 57 Pa) is true. Since the p-value is greater than the commonly used significance level of 0.05, we fail to reject the null hypothesis. This means that we do not have enough evidence to claim that the true mean is significantly below 57 Pa.

Therefore, the conclusion is that there is weak evidence supporting the claim that the true mean is below the desired specification of 57 Pa.

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The study design is a prospective cohort study.
The key points that led to this conclusion are:
- Participants were selected at random from the total population and followed up over a period of 10 years
- Information on dietary intake and other risk factors was collected at the beginning of the study
- Participants were contacted every two years to update their information
- Outcome data was collected from a cancer registry

A more efficient study design in terms of time and cost for asking the same research question could be a cross-sectional study. This would involve recruiting a larger sample of people at one time point and collecting data on their dietary intake and cancer status. However, this design would not allow for follow-up over time to assess changes in diet and cancer risk. In a case-control study, researchers would identify individuals with colon cancer (cases) and those without (controls), and then compare their dietary antioxidant intake. This design typically requires fewer participants and can be completed more quickly, as it doesn't involve following participants over an extended period of time.

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Let x=u+v, y=u+w, and z=v+w. Then by hypothesis, {z, y, z} is linearly independent.

Now, observe that x-2y+z = (u+v) - 2(u+w) + (v+w) = -u -w, and similarly, x+z-2y = -v-w and y-2z+x = -u-v.

Thus, we have expressed u, v, and w as linear combinations of x, y, and z. Specifically, we have:

u = (x-2y+z)/(-1)
v = (x+z-2y)/(-1)
w = (y-2z+x)/(-1)

Using this, we can rewrite any linear combination of u, v, and w as a linear combination of x, y, and z.

Suppose {u, v, w} is not linearly independent. Then there exist constants a,b,c, not all zero, such that au+bv+cw=0. But using the expressions above, we can rewrite this as:

a(x-2y+z) + b(x+z-2y) + c(y-2z+x) = (a+b+c)x + (-2a-2b+c)y + (a-2b-2c)z = 0

Since {z, y, z} is linearly independent, this implies that a+b+c = -2a-2b+c = a-2b-2c = 0. Solving this system of equations, we get a=b=c=0, which contradicts our assumption that not all the constants are zero.

Therefore, we conclude that if {u+v, u+w, v+w} is linearly independent, then {u, v, w} must also be linearly independent.

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To find the critical value for a 99% confidence level, you will need to use the z-table, which lists the z-scores for different confidence levels. Here's a step-by-step explanation:

1. Identify the confidence level: In this case, it's 99%.

2. Calculate the area under the curve: Since the confidence level is 99%, the area under the curve would be 0.99 or 99%. The remaining 1% is split between the two tails of the distribution.

3. Determine the area in one tail: Divide the remaining area by 2 (1% ÷ 2 = 0.005 or 0.5%). This is the area in one tail of the distribution.

4. Use the z-table to find the critical value: Look for the closest value to 0.995 (0.990 + 0.005) in the z-table. This value corresponds to a z-score of 2.576.

5. Round the critical value: Since the question asks for the critical value rounded to two decimal places, the answer would be 2.58. So, the critical value for a 99% confidence level is 2.58.

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The value of given function [tex]f(x) = \frac{4}{x+2}+2[/tex] at x = -4 is 0, and at x = 4 is 2.17. The graph and table is attached below.

To graph and create a table for f(x) = 4/(x+2) + 2, we can start by making a table of values. To calculate the value of F(x) at each given x, we substitute the value of x into the function and simplify as follows,

At x = -4

F(x) = (4/(-4+2)) + 2 = -2 + 2 = 0

Therefore, F(-4) = 0.

At x = -3

F(x) = (4/(-3+2)) + 2 = undefined (division by zero)

Therefore, F(-3) is undefined.

At x = -2

F(x) = (4/(-2+2)) + 2 = undefined (division by zero)

Therefore, F(-2) is undefined.

At x = -1

F(x) = (4/(-1+2)) + 2 = 6

Therefore, F(-1) = 6.

At x = 0

F(x) = (4/(0+2)) + 2 = 10

Therefore, F(0) = 10.

At x = 1

F(x) = (4/(1+2)) + 2 = 4

Therefore, F(1) = 4.

At x = 2

F(x) = (4/(2+2)) + 2 = 2.67

Therefore, F(2) = 2.67.

At x = 3

F(x) = (4/(3+2)) + 2 = 2.4

Therefore, F(3) = 2.4.

At x = 4

F(x) = (4/(4+2)) + 2 = 2.17

Therefore, F(4) = 2.17.

Now we can plot these points on a coordinate plane and connect them to create the graph.

A vertical asymptote is a vertical line on a graph that the function approaches but never touches or crosses. It occurs when the denominator of a rational function (a function with a fraction of polynomials) becomes zero and the function becomes undefined at that point.

A horizontal asymptote is a horizontal line on a graph that the function approaches as x approaches positive or negative infinity. It describes the long-term behavior of a function as x becomes very large or very small.

We can see from the graph that there is a vertical asymptote at x = -2, and a horizontal asymptote at y = 2.

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The sequence of sample proportions (0.625, 0.563, 0.750, 0.500, 0.625) falls within this range and is the most likely to occur for 5 random samples of 8 students from this population.

In this question, we are given a small college population where 60% of students are eligible for financial aid. We use an applet to select a random sample of 8 students from the population, and the applet calculates the proportion in the sample who are eligible for financial aid. We repeat this process many times to observe how the sample proportions vary.

To answer this question, we need to understand the concept of sampling variability. In statistics, sampling variability refers to the fact that different random samples from the same population can yield different results. The variability in sample results is due to chance and can be quantified using statistical measures such as the standard deviation.

The question asks us to examine the variability in the sample proportions generated by the applet and select the most likely sequence of sample proportions for 5 random samples of 8 students from the population.

Based on the concept of sampling variability, we can expect the sample proportions to vary from sample to sample. However, we can make some predictions about the range of values that the sample proportions are likely to fall within. Specifically, we can use the formula for the standard error of the proportion:

SE(p) = sqrt[p(1-p)/n]

where p is the population proportion, n is the sample size, and sqrt denotes the square root function.

Using this formula, we can calculate that the standard error of the proportion for a sample of 8 students from a population where 60% are eligible for financial aid is:

SE(p) = sqrt[0.6(1-0.6)/8] = 0.165

This means that we can expect the sample proportions to vary by approximately plus or minus 0.165 around the true population proportion of 0.6. Therefore, any sequence of sample proportions that falls within this range is a plausible outcome.

Looking at the options provided, the sequence of sample proportions (0.625, 0.563, 0.750, 0.500, 0.625) falls within this range and is the most likely to occur for 5 random samples of 8 students from this population.

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The frequencies of the dominant red allele, the recessive white allele, and the incomplete dominance allele that produces pink flowers are 0.425, 0.475, and 0.55, respectively.

To solve for the alleles, we need to first determine the possible genetic combinations that could result in the observed flower colors. Let's use the following notation: R for the dominant red allele, r for the recessive white allele, and P for the incomplete dominance allele that produces pink flowers when paired with either R or r.

If we assume that the inheritance of flower color follows Mendelian genetics, we can use the Punnett square to determine the expected ratios of offspring for each possible combination of alleles. Here are the possible genetic combinations and their expected ratios:

RR (red) x RR (red) = 100% RR (red)
RR (red) x RP (pink) = 50% RR (red), 50% RP (pink)
RR (red) x rr (white) = 100% Rr (pink)
RP (pink) x RP (pink) = 25% RR (red), 50% RP (pink), 25% rr (white)
RP (pink) x rr (white) = 50% Rr (pink), 50% rr (white)

Using these ratios, we can calculate the expected number of each genotype based on the observed number of flowers:

RR (red) = 100
RP (pink) = 0.5 x (800 + 100) = 450
Rr (pink) = 2 x 100 = 200
rr (white) = 0.25 x 800 + 0.5 x 100 = 250

Therefore, the allele frequencies can be calculated as follows:

R = (2 x RR) + RP + Rr = (2 x 100) + 450 + 200 = 850
r = (2 x rr) + RP + Rr = (2 x 250) + 450 + 200 = 950
P = RP + (0.5 x Rr) = 450 + (0.5 x 200) = 550

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The expected weight of a package of 25 boxes is 800 ounces, with a standard deviation of 6.25 ounces.

To determine the expected weight of a package of 25 boxes, we need to use the properties of expected value and standard deviation.

First, we know that the expected value of one box is 32 ounces. Therefore, the expected value of 25 boxes packaged together is simply 25 multiplied by 32, which equals 800 ounces.

Next, we need to take into account the standard deviation of the weights. Since the weights of each box are considered to be independent of each other, we can use the formula for the standard deviation of the sum of independent random variables:

σ_total = sqrt(n * σ^2)

where σ_total is the standard deviation of the sum of n independent random variables with standard deviation σ.

In this case, n is 25 and σ is 1.5 ounces. Plugging these values into the formula, we get:

σ_total = sqrt(25 * 1.5^2) = 6.25 ounces

Therefore, the expected weight of a package of 25 boxes is 800 ounces, with a standard deviation of 6.25 ounces.

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Here is a method for creating an octagon out of three smaller shapes, its given below.

Make a sizable triangle with equal sides.

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The value of x that makes the photo area half of the entire area is: 1.12 in

The area of a rectangle is given by the formula:

A = L * w

where:

L is length

w is width

Thus:

Area of photo = 4 * 2 = 8 in²

We are told that this area is half of the entire ad. Thus:

¹/₂(4 + x)(2 + x) = 8

x² + 6x + 8 = 16

x² + 6x - 8 = 0

Solving using a quadratic calculator gives:

x = 1.12 in

Read more about Algebra Word Problems at: https://brainly.com/question/21405634

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